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Finding the Fourth Proportional to 99,129.68, 148,717.92 and 32,570

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Solution

The fourth proportional to 99,129.68, 148,717.92 and 32,570 is: 48,862.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,129.68 : 148,717.92 = 32,570 : x
  2. Step 2: Convert to fraction form
    99,129.68/148,717.92 = 32,570/x
  3. Step 3: Cross multiply
    99,129.68x = 148,717.92 × 32,570
  4. Step 4: Simplify right side
    99,129.68x = 4,843,742,654.40
  5. Step 5: Solve for x
    x = 4,843,742,654.40/99,129.68
  6. Step 6: Final answer
    x = 48,862.69

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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.