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Finding the Fourth Proportional to 261,460.82, 392,061.72 and 92,955.92

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Solution

The fourth proportional to 261,460.82, 392,061.72 and 92,955.92 is: 139,387.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,460.82 : 392,061.72 = 92,955.92 : x
  2. Step 2: Convert to fraction form
    261,460.82/392,061.72 = 92,955.92/x
  3. Step 3: Cross multiply
    261,460.82x = 392,061.72 × 92,955.92
  4. Step 4: Simplify right side
    261,460.82x = 36,444,455,919.07
  5. Step 5: Solve for x
    x = 36,444,455,919.07/261,460.82
  6. Step 6: Final answer
    x = 139,387.83

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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.