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Finding the Fourth Proportional to 261,766.92, 361,253.52 and 197,120.40

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Solution

The fourth proportional to 261,766.92, 361,253.52 and 197,120.40 is: 272,037.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,766.92 : 361,253.52 = 197,120.40 : x
  2. Step 2: Convert to fraction form
    261,766.92/361,253.52 = 197,120.40/x
  3. Step 3: Cross multiply
    261,766.92x = 361,253.52 × 197,120.40
  4. Step 4: Simplify right side
    261,766.92x = 71,210,438,363.81
  5. Step 5: Solve for x
    x = 71,210,438,363.81/261,766.92
  6. Step 6: Final answer
    x = 272,037.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.