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Finding the Fourth Proportional to 118,057.32, 162,919.14 and 64,342.38

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Solution

The fourth proportional to 118,057.32, 162,919.14 and 64,342.38 is: 88,792.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,057.32 : 162,919.14 = 64,342.38 : x
  2. Step 2: Convert to fraction form
    118,057.32/162,919.14 = 64,342.38/x
  3. Step 3: Cross multiply
    118,057.32x = 162,919.14 × 64,342.38
  4. Step 4: Simplify right side
    118,057.32x = 10,482,605,215.15
  5. Step 5: Solve for x
    x = 10,482,605,215.15/118,057.32
  6. Step 6: Final answer
    x = 88,792.51

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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.