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Finding the Fourth Proportional to 63,312.48, 87,398.13 and 39,450.95

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Solution

The fourth proportional to 63,312.48, 87,398.13 and 39,450.95 is: 54,459.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,312.48 : 87,398.13 = 39,450.95 : x
  2. Step 2: Convert to fraction form
    63,312.48/87,398.13 = 39,450.95/x
  3. Step 3: Cross multiply
    63,312.48x = 87,398.13 × 39,450.95
  4. Step 4: Simplify right side
    63,312.48x = 3,447,938,819.73
  5. Step 5: Solve for x
    x = 3,447,938,819.73/63,312.48
  6. Step 6: Final answer
    x = 54,459.07

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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.