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Finding the Fourth Proportional to 261,417.76, 392,177.70 and 83,911.12

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Solution

The fourth proportional to 261,417.76, 392,177.70 and 83,911.12 is: 125,883.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,417.76 : 392,177.70 = 83,911.12 : x
  2. Step 2: Convert to fraction form
    261,417.76/392,177.70 = 83,911.12/x
  3. Step 3: Cross multiply
    261,417.76x = 392,177.70 × 83,911.12
  4. Step 4: Simplify right side
    261,417.76x = 32,908,070,046.02
  5. Step 5: Solve for x
    x = 32,908,070,046.02/261,417.76
  6. Step 6: Final answer
    x = 125,883.07

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1.5x scale

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.