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Finding the Fourth Proportional to 55,357.64, 83,049.65 and 17,917.72

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Solution

The fourth proportional to 55,357.64, 83,049.65 and 17,917.72 is: 26,880.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,357.64 : 83,049.65 = 17,917.72 : x
  2. Step 2: Convert to fraction form
    55,357.64/83,049.65 = 17,917.72/x
  3. Step 3: Cross multiply
    55,357.64x = 83,049.65 × 17,917.72
  4. Step 4: Simplify right side
    55,357.64x = 1,488,060,389.02
  5. Step 5: Solve for x
    x = 1,488,060,389.02/55,357.64
  6. Step 6: Final answer
    x = 26,880.85

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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.