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Finding the Fourth Proportional to 59,999.43, 82,788.39 and 38,766.40

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Solution

The fourth proportional to 59,999.43, 82,788.39 and 38,766.40 is: 53,490.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,999.43 : 82,788.39 = 38,766.40 : x
  2. Step 2: Convert to fraction form
    59,999.43/82,788.39 = 38,766.40/x
  3. Step 3: Cross multiply
    59,999.43x = 82,788.39 × 38,766.40
  4. Step 4: Simplify right side
    59,999.43x = 3,209,407,428.15
  5. Step 5: Solve for x
    x = 3,209,407,428.15/59,999.43
  6. Step 6: Final answer
    x = 53,490.63

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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.