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Finding the Fourth Proportional to 261,399.29, 392,061.87 and 83,883.35

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Solution

The fourth proportional to 261,399.29, 392,061.87 and 83,883.35 is: 125,813.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,399.29 : 392,061.87 = 83,883.35 : x
  2. Step 2: Convert to fraction form
    261,399.29/392,061.87 = 83,883.35/x
  3. Step 3: Cross multiply
    261,399.29x = 392,061.87 × 83,883.35
  4. Step 4: Simplify right side
    261,399.29x = 32,887,463,062.86
  5. Step 5: Solve for x
    x = 32,887,463,062.86/261,399.29
  6. Step 6: Final answer
    x = 125,813.13

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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.