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Finding the Fourth Proportional to 357,126.56, 535,672.53 and 132,530.78

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Solution

The fourth proportional to 357,126.56, 535,672.53 and 132,530.78 is: 198,789.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,126.56 : 535,672.53 = 132,530.78 : x
  2. Step 2: Convert to fraction form
    357,126.56/535,672.53 = 132,530.78/x
  3. Step 3: Cross multiply
    357,126.56x = 535,672.53 × 132,530.78
  4. Step 4: Simplify right side
    357,126.56x = 70,993,098,225.47
  5. Step 5: Solve for x
    x = 70,993,098,225.47/357,126.56
  6. Step 6: Final answer
    x = 198,789.75

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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.