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Finding the Fourth Proportional to 713,081.80, 1,069,622.70 and 608,105.80

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Solution

The fourth proportional to 713,081.80, 1,069,622.70 and 608,105.80 is: 912,158.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,081.80 : 1,069,622.70 = 608,105.80 : x
  2. Step 2: Convert to fraction form
    713,081.80/1,069,622.70 = 608,105.80/x
  3. Step 3: Cross multiply
    713,081.80x = 1,069,622.70 × 608,105.80
  4. Step 4: Simplify right side
    713,081.80x = 650,443,767,681.66
  5. Step 5: Solve for x
    x = 650,443,767,681.66/713,081.80
  6. Step 6: Final answer
    x = 912,158.70

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.