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Finding the Fourth Proportional to 95,347.68, 131,603.99 and 65,145.21

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Solution

The fourth proportional to 95,347.68, 131,603.99 and 65,145.21 is: 89,916.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,347.68 : 131,603.99 = 65,145.21 : x
  2. Step 2: Convert to fraction form
    95,347.68/131,603.99 = 65,145.21/x
  3. Step 3: Cross multiply
    95,347.68x = 131,603.99 × 65,145.21
  4. Step 4: Simplify right side
    95,347.68x = 8,573,369,239.66
  5. Step 5: Solve for x
    x = 8,573,369,239.66/95,347.68
  6. Step 6: Final answer
    x = 89,916.92

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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.