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Finding the Fourth Proportional to 118,082.32, 162,953.64 and 64,367.28

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Solution

The fourth proportional to 118,082.32, 162,953.64 and 64,367.28 is: 88,826.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,082.32 : 162,953.64 = 64,367.28 : x
  2. Step 2: Convert to fraction form
    118,082.32/162,953.64 = 64,367.28/x
  3. Step 3: Cross multiply
    118,082.32x = 162,953.64 × 64,367.28
  4. Step 4: Simplify right side
    118,082.32x = 10,488,882,572.90
  5. Step 5: Solve for x
    x = 10,488,882,572.90/118,082.32
  6. Step 6: Final answer
    x = 88,826.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.