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Finding the Fourth Proportional to 144,493.40, 216,729.30 and 60,231.80

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Solution

The fourth proportional to 144,493.40, 216,729.30 and 60,231.80 is: 90,343.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,493.40 : 216,729.30 = 60,231.80 : x
  2. Step 2: Convert to fraction form
    144,493.40/216,729.30 = 60,231.80/x
  3. Step 3: Cross multiply
    144,493.40x = 216,729.30 × 60,231.80
  4. Step 4: Simplify right side
    144,493.40x = 13,053,995,851.74
  5. Step 5: Solve for x
    x = 13,053,995,851.74/144,493.40
  6. Step 6: Final answer
    x = 90,343.20

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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.