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Finding the Fourth Proportional to 124,691.28, 186,704.64 and 108,748.08

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Solution

The fourth proportional to 124,691.28, 186,704.64 and 108,748.08 is: 162,832.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,691.28 : 186,704.64 = 108,748.08 : x
  2. Step 2: Convert to fraction form
    124,691.28/186,704.64 = 108,748.08/x
  3. Step 3: Cross multiply
    124,691.28x = 186,704.64 × 108,748.08
  4. Step 4: Simplify right side
    124,691.28x = 20,303,771,127.09
  5. Step 5: Solve for x
    x = 20,303,771,127.09/124,691.28
  6. Step 6: Final answer
    x = 162,832.33

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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.