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Finding the Fourth Proportional to 357,140.20, 535,332.30 and 132,356.20

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Solution

The fourth proportional to 357,140.20, 535,332.30 and 132,356.20 is: 198,394.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,140.20 : 535,332.30 = 132,356.20 : x
  2. Step 2: Convert to fraction form
    357,140.20/535,332.30 = 132,356.20/x
  3. Step 3: Cross multiply
    357,140.20x = 535,332.30 × 132,356.20
  4. Step 4: Simplify right side
    357,140.20x = 70,854,548,965.26
  5. Step 5: Solve for x
    x = 70,854,548,965.26/357,140.20
  6. Step 6: Final answer
    x = 198,394.21

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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.