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Finding the Fourth Proportional to 261,785.22, 392,580.84 and 93,260.77

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Solution

The fourth proportional to 261,785.22, 392,580.84 and 93,260.77 is: 139,856.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,785.22 : 392,580.84 = 93,260.77 : x
  2. Step 2: Convert to fraction form
    261,785.22/392,580.84 = 93,260.77/x
  3. Step 3: Cross multiply
    261,785.22x = 392,580.84 × 93,260.77
  4. Step 4: Simplify right side
    261,785.22x = 36,612,390,793.92
  5. Step 5: Solve for x
    x = 36,612,390,793.92/261,785.22
  6. Step 6: Final answer
    x = 139,856.60

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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.