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Finding the Fourth Proportional to 869,506.84, 1,199,900.82 and 487,525.24

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Solution

The fourth proportional to 869,506.84, 1,199,900.82 and 487,525.24 is: 672,774.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,506.84 : 1,199,900.82 = 487,525.24 : x
  2. Step 2: Convert to fraction form
    869,506.84/1,199,900.82 = 487,525.24/x
  3. Step 3: Cross multiply
    869,506.84x = 1,199,900.82 × 487,525.24
  4. Step 4: Simplify right side
    869,506.84x = 584,981,935,246.70
  5. Step 5: Solve for x
    x = 584,981,935,246.70/869,506.84
  6. Step 6: Final answer
    x = 672,774.39

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Double scale
Find fourth proportional to 869,507.84, 1,199,902.20 and 487,526.24
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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.