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Finding the Fourth Proportional to 93,891.12, 140,630.28 and 88,715.28

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Solution

The fourth proportional to 93,891.12, 140,630.28 and 88,715.28 is: 132,877.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,891.12 : 140,630.28 = 88,715.28 : x
  2. Step 2: Convert to fraction form
    93,891.12/140,630.28 = 88,715.28/x
  3. Step 3: Cross multiply
    93,891.12x = 140,630.28 × 88,715.28
  4. Step 4: Simplify right side
    93,891.12x = 12,476,054,666.68
  5. Step 5: Solve for x
    x = 12,476,054,666.68/93,891.12
  6. Step 6: Final answer
    x = 132,877.90

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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.