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Finding the Fourth Proportional to 114,932.60, 172,398.90 and 88,688.60

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Solution

The fourth proportional to 114,932.60, 172,398.90 and 88,688.60 is: 133,032.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,932.60 : 172,398.90 = 88,688.60 : x
  2. Step 2: Convert to fraction form
    114,932.60/172,398.90 = 88,688.60/x
  3. Step 3: Cross multiply
    114,932.60x = 172,398.90 × 88,688.60
  4. Step 4: Simplify right side
    114,932.60x = 15,289,817,082.54
  5. Step 5: Solve for x
    x = 15,289,817,082.54/114,932.60
  6. Step 6: Final answer
    x = 133,032.90

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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.