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Finding the Fourth Proportional to 261,712.77, 392,569.16 and 84,233.67

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Solution

The fourth proportional to 261,712.77, 392,569.16 and 84,233.67 is: 126,350.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,712.77 : 392,569.16 = 84,233.67 : x
  2. Step 2: Convert to fraction form
    261,712.77/392,569.16 = 84,233.67/x
  3. Step 3: Cross multiply
    261,712.77x = 392,569.16 × 84,233.67
  4. Step 4: Simplify right side
    261,712.77x = 33,067,540,654.45
  5. Step 5: Solve for x
    x = 33,067,540,654.45/261,712.77
  6. Step 6: Final answer
    x = 126,350.51

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.