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Finding the Fourth Proportional to 118,082.56, 162,949.12 and 64,366.40

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Solution

The fourth proportional to 118,082.56, 162,949.12 and 64,366.40 is: 88,823.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,082.56 : 162,949.12 = 64,366.40 : x
  2. Step 2: Convert to fraction form
    118,082.56/162,949.12 = 64,366.40/x
  3. Step 3: Cross multiply
    118,082.56x = 162,949.12 × 64,366.40
  4. Step 4: Simplify right side
    118,082.56x = 10,488,448,237.57
  5. Step 5: Solve for x
    x = 10,488,448,237.57/118,082.56
  6. Step 6: Final answer
    x = 88,823.01

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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.