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Finding the Fourth Proportional to 181,761.60, 272,642.40 and 115,276.80

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Solution

The fourth proportional to 181,761.60, 272,642.40 and 115,276.80 is: 172,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,761.60 : 272,642.40 = 115,276.80 : x
  2. Step 2: Convert to fraction form
    181,761.60/272,642.40 = 115,276.80/x
  3. Step 3: Cross multiply
    181,761.60x = 272,642.40 × 115,276.80
  4. Step 4: Simplify right side
    181,761.60x = 31,429,343,416.32
  5. Step 5: Solve for x
    x = 31,429,343,416.32/181,761.60
  6. Step 6: Final answer
    x = 172,915.20

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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.