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Finding the Fourth Proportional to 136,953.53, 188,985.11 and 75,697.14

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Solution

The fourth proportional to 136,953.53, 188,985.11 and 75,697.14 is: 104,456.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,953.53 : 188,985.11 = 75,697.14 : x
  2. Step 2: Convert to fraction form
    136,953.53/188,985.11 = 75,697.14/x
  3. Step 3: Cross multiply
    136,953.53x = 188,985.11 × 75,697.14
  4. Step 4: Simplify right side
    136,953.53x = 14,305,631,951.10
  5. Step 5: Solve for x
    x = 14,305,631,951.10/136,953.53
  6. Step 6: Final answer
    x = 104,456.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.