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Finding the Fourth Proportional to 527,515.56, 727,972.19 and 285,798.15

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Solution

The fourth proportional to 527,515.56, 727,972.19 and 285,798.15 is: 394,401.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,515.56 : 727,972.19 = 285,798.15 : x
  2. Step 2: Convert to fraction form
    527,515.56/727,972.19 = 285,798.15/x
  3. Step 3: Cross multiply
    527,515.56x = 727,972.19 × 285,798.15
  4. Step 4: Simplify right side
    527,515.56x = 208,053,103,724.46
  5. Step 5: Solve for x
    x = 208,053,103,724.46/527,515.56
  6. Step 6: Final answer
    x = 394,401.83

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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.