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Finding the Fourth Proportional to 19,572.08, 29,358.02 and 4,781.08

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Solution

The fourth proportional to 19,572.08, 29,358.02 and 4,781.08 is: 7,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,572.08 : 29,358.02 = 4,781.08 : x
  2. Step 2: Convert to fraction form
    19,572.08/29,358.02 = 4,781.08/x
  3. Step 3: Cross multiply
    19,572.08x = 29,358.02 × 4,781.08
  4. Step 4: Simplify right side
    19,572.08x = 140,363,042.26
  5. Step 5: Solve for x
    x = 140,363,042.26/19,572.08
  6. Step 6: Final answer
    x = 7,171.60

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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.