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Finding the Fourth Proportional to 96,543.60, 144,834.60 and 81,068.40

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Solution

The fourth proportional to 96,543.60, 144,834.60 and 81,068.40 is: 121,618.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,543.60 : 144,834.60 = 81,068.40 : x
  2. Step 2: Convert to fraction form
    96,543.60/144,834.60 = 81,068.40/x
  3. Step 3: Cross multiply
    96,543.60x = 144,834.60 × 81,068.40
  4. Step 4: Simplify right side
    96,543.60x = 11,741,509,286.64
  5. Step 5: Solve for x
    x = 11,741,509,286.64/96,543.60
  6. Step 6: Final answer
    x = 121,618.72

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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.