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Finding the Fourth Proportional to 636,392.56, 878,214.61 and 473,776.15

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Solution

The fourth proportional to 636,392.56, 878,214.61 and 473,776.15 is: 653,805.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,392.56 : 878,214.61 = 473,776.15 : x
  2. Step 2: Convert to fraction form
    636,392.56/878,214.61 = 473,776.15/x
  3. Step 3: Cross multiply
    636,392.56x = 878,214.61 × 473,776.15
  4. Step 4: Simplify right side
    636,392.56x = 416,077,136,799.55
  5. Step 5: Solve for x
    x = 416,077,136,799.55/636,392.56
  6. Step 6: Final answer
    x = 653,805.78

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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.