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Finding the Fourth Proportional to 261,763.20, 392,700.60 and 149,497.20

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Solution

The fourth proportional to 261,763.20, 392,700.60 and 149,497.20 is: 224,277.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,763.20 : 392,700.60 = 149,497.20 : x
  2. Step 2: Convert to fraction form
    261,763.20/392,700.60 = 149,497.20/x
  3. Step 3: Cross multiply
    261,763.20x = 392,700.60 × 149,497.20
  4. Step 4: Simplify right side
    261,763.20x = 58,707,640,138.32
  5. Step 5: Solve for x
    x = 58,707,640,138.32/261,763.20
  6. Step 6: Final answer
    x = 224,277.67

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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.