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Finding the Fourth Proportional to 636,498.68, 880,681.19 and 554,996.78

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Solution

The fourth proportional to 636,498.68, 880,681.19 and 554,996.78 is: 767,912.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,498.68 : 880,681.19 = 554,996.78 : x
  2. Step 2: Convert to fraction form
    636,498.68/880,681.19 = 554,996.78/x
  3. Step 3: Cross multiply
    636,498.68x = 880,681.19 × 554,996.78
  4. Step 4: Simplify right side
    636,498.68x = 488,775,217,478.18
  5. Step 5: Solve for x
    x = 488,775,217,478.18/636,498.68
  6. Step 6: Final answer
    x = 767,912.39

Related Problems

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Half scale
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Double scale
Find fourth proportional to 636,499.68, 880,682.57 and 554,997.78
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.