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Finding the Fourth Proportional to 124,841.80, 187,262.70 and 82,851.40

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Solution

The fourth proportional to 124,841.80, 187,262.70 and 82,851.40 is: 124,277.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,841.80 : 187,262.70 = 82,851.40 : x
  2. Step 2: Convert to fraction form
    124,841.80/187,262.70 = 82,851.40/x
  3. Step 3: Cross multiply
    124,841.80x = 187,262.70 × 82,851.40
  4. Step 4: Simplify right side
    124,841.80x = 15,514,976,862.78
  5. Step 5: Solve for x
    x = 15,514,976,862.78/124,841.80
  6. Step 6: Final answer
    x = 124,277.10

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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.