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Finding the Fourth Proportional to 72,547.60, 108,691.80 and 59,328.40

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Solution

The fourth proportional to 72,547.60, 108,691.80 and 59,328.40 is: 88,886.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,547.60 : 108,691.80 = 59,328.40 : x
  2. Step 2: Convert to fraction form
    72,547.60/108,691.80 = 59,328.40/x
  3. Step 3: Cross multiply
    72,547.60x = 108,691.80 × 59,328.40
  4. Step 4: Simplify right side
    72,547.60x = 6,448,510,587.12
  5. Step 5: Solve for x
    x = 6,448,510,587.12/72,547.60
  6. Step 6: Final answer
    x = 88,886.61

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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.