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Finding the Fourth Proportional to 181,706.40, 272,608.20 and 129,218.40

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Solution

The fourth proportional to 181,706.40, 272,608.20 and 129,218.40 is: 193,862.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,706.40 : 272,608.20 = 129,218.40 : x
  2. Step 2: Convert to fraction form
    181,706.40/272,608.20 = 129,218.40/x
  3. Step 3: Cross multiply
    181,706.40x = 272,608.20 × 129,218.40
  4. Step 4: Simplify right side
    181,706.40x = 35,225,995,430.88
  5. Step 5: Solve for x
    x = 35,225,995,430.88/181,706.40
  6. Step 6: Final answer
    x = 193,862.16

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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.