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Finding the Fourth Proportional to 72,441.60, 108,532.80 and 59,222.40

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Solution

The fourth proportional to 72,441.60, 108,532.80 and 59,222.40 is: 88,727.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,441.60 : 108,532.80 = 59,222.40 : x
  2. Step 2: Convert to fraction form
    72,441.60/108,532.80 = 59,222.40/x
  3. Step 3: Cross multiply
    72,441.60x = 108,532.80 × 59,222.40
  4. Step 4: Simplify right side
    72,441.60x = 6,427,572,894.72
  5. Step 5: Solve for x
    x = 6,427,572,894.72/72,441.60
  6. Step 6: Final answer
    x = 88,727.65

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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.