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Finding the Fourth Proportional to 436,188.18, 654,281.28 and 136,691.58

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Solution

The fourth proportional to 436,188.18, 654,281.28 and 136,691.58 is: 205,037.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,188.18 : 654,281.28 = 136,691.58 : x
  2. Step 2: Convert to fraction form
    436,188.18/654,281.28 = 136,691.58/x
  3. Step 3: Cross multiply
    436,188.18x = 654,281.28 × 136,691.58
  4. Step 4: Simplify right side
    436,188.18x = 89,434,741,927.62
  5. Step 5: Solve for x
    x = 89,434,741,927.62/436,188.18
  6. Step 6: Final answer
    x = 205,037.06

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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.