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Finding the Fourth Proportional to 45,221, 62,406.90 and 25,349

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Solution

The fourth proportional to 45,221, 62,406.90 and 25,349 is: 34,982.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,221 : 62,406.90 = 25,349 : x
  2. Step 2: Convert to fraction form
    45,221/62,406.90 = 25,349/x
  3. Step 3: Cross multiply
    45,221x = 62,406.90 × 25,349
  4. Step 4: Simplify right side
    45,221x = 1,581,952,508.10
  5. Step 5: Solve for x
    x = 1,581,952,508.10/45,221
  6. Step 6: Final answer
    x = 34,982.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.