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Finding the Fourth Proportional to 411,129.51, 616,760.73 and 126,753.49

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Solution

The fourth proportional to 411,129.51, 616,760.73 and 126,753.49 is: 190,150.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,129.51 : 616,760.73 = 126,753.49 : x
  2. Step 2: Convert to fraction form
    411,129.51/616,760.73 = 126,753.49/x
  3. Step 3: Cross multiply
    411,129.51x = 616,760.73 × 126,753.49
  4. Step 4: Simplify right side
    411,129.51x = 78,176,575,793.40
  5. Step 5: Solve for x
    x = 78,176,575,793.40/411,129.51
  6. Step 6: Final answer
    x = 190,150.73

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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.