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Finding the Fourth Proportional to 363,921.72, 545,807.28 and 97,618.92

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Solution

The fourth proportional to 363,921.72, 545,807.28 and 97,618.92 is: 146,408.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,921.72 : 545,807.28 = 97,618.92 : x
  2. Step 2: Convert to fraction form
    363,921.72/545,807.28 = 97,618.92/x
  3. Step 3: Cross multiply
    363,921.72x = 545,807.28 × 97,618.92
  4. Step 4: Simplify right side
    363,921.72x = 53,281,117,201.74
  5. Step 5: Solve for x
    x = 53,281,117,201.74/363,921.72
  6. Step 6: Final answer
    x = 146,408.18

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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.