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Finding the Fourth Proportional to 124,543.17, 186,851.21 and 53,428.41

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Solution

The fourth proportional to 124,543.17, 186,851.21 and 53,428.41 is: 80,158.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,543.17 : 186,851.21 = 53,428.41 : x
  2. Step 2: Convert to fraction form
    124,543.17/186,851.21 = 53,428.41/x
  3. Step 3: Cross multiply
    124,543.17x = 186,851.21 × 53,428.41
  4. Step 4: Simplify right side
    124,543.17x = 9,983,162,789.73
  5. Step 5: Solve for x
    x = 9,983,162,789.73/124,543.17
  6. Step 6: Final answer
    x = 80,158.25

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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.