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Finding the Fourth Proportional to 19,402.66, 29,103.99 and 15,488.74

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Solution

The fourth proportional to 19,402.66, 29,103.99 and 15,488.74 is: 23,233.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,402.66 : 29,103.99 = 15,488.74 : x
  2. Step 2: Convert to fraction form
    19,402.66/29,103.99 = 15,488.74/x
  3. Step 3: Cross multiply
    19,402.66x = 29,103.99 × 15,488.74
  4. Step 4: Simplify right side
    19,402.66x = 450,784,134.07
  5. Step 5: Solve for x
    x = 450,784,134.07/19,402.66
  6. Step 6: Final answer
    x = 23,233.11

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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.