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Finding the Fourth Proportional to 636,393.56, 878,215.99 and 473,777.15

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Solution

The fourth proportional to 636,393.56, 878,215.99 and 473,777.15 is: 653,807.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,393.56 : 878,215.99 = 473,777.15 : x
  2. Step 2: Convert to fraction form
    636,393.56/878,215.99 = 473,777.15/x
  3. Step 3: Cross multiply
    636,393.56x = 878,215.99 × 473,777.15
  4. Step 4: Simplify right side
    636,393.56x = 416,078,668,826.63
  5. Step 5: Solve for x
    x = 416,078,668,826.63/636,393.56
  6. Step 6: Final answer
    x = 653,807.16

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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.