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Finding the Fourth Proportional to 75,084.80, 112,432.80 and 59,403.20

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Solution

The fourth proportional to 75,084.80, 112,432.80 and 59,403.20 is: 88,951.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,084.80 : 112,432.80 = 59,403.20 : x
  2. Step 2: Convert to fraction form
    75,084.80/112,432.80 = 59,403.20/x
  3. Step 3: Cross multiply
    75,084.80x = 112,432.80 × 59,403.20
  4. Step 4: Simplify right side
    75,084.80x = 6,678,868,104.96
  5. Step 5: Solve for x
    x = 6,678,868,104.96/75,084.80
  6. Step 6: Final answer
    x = 88,951.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.