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Finding the Fourth Proportional to 261,396.51, 392,131.07 and 83,957.91

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Solution

The fourth proportional to 261,396.51, 392,131.07 and 83,957.91 is: 125,948.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,396.51 : 392,131.07 = 83,957.91 : x
  2. Step 2: Convert to fraction form
    261,396.51/392,131.07 = 83,957.91/x
  3. Step 3: Cross multiply
    261,396.51x = 392,131.07 × 83,957.91
  4. Step 4: Simplify right side
    261,396.51x = 32,922,504,663.47
  5. Step 5: Solve for x
    x = 32,922,504,663.47/261,396.51
  6. Step 6: Final answer
    x = 125,948.52

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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.