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Finding the Fourth Proportional to 113,663.30, 170,476.58 and 53,691.64

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Solution

The fourth proportional to 113,663.30, 170,476.58 and 53,691.64 is: 80,528.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,663.30 : 170,476.58 = 53,691.64 : x
  2. Step 2: Convert to fraction form
    113,663.30/170,476.58 = 53,691.64/x
  3. Step 3: Cross multiply
    113,663.30x = 170,476.58 × 53,691.64
  4. Step 4: Simplify right side
    113,663.30x = 9,153,166,869.83
  5. Step 5: Solve for x
    x = 9,153,166,869.83/113,663.30
  6. Step 6: Final answer
    x = 80,528.78

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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.