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Finding the Fourth Proportional to 261,844.92, 392,401.13 and 141,642.32

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Solution

The fourth proportional to 261,844.92, 392,401.13 and 141,642.32 is: 212,265.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,844.92 : 392,401.13 = 141,642.32 : x
  2. Step 2: Convert to fraction form
    261,844.92/392,401.13 = 141,642.32/x
  3. Step 3: Cross multiply
    261,844.92x = 392,401.13 × 141,642.32
  4. Step 4: Simplify right side
    261,844.92x = 55,580,603,753.60
  5. Step 5: Solve for x
    x = 55,580,603,753.60/261,844.92
  6. Step 6: Final answer
    x = 212,265.35

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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.