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Finding the Fourth Proportional to 118,176.91, 163,086.41 and 64,463.88

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Solution

The fourth proportional to 118,176.91, 163,086.41 and 64,463.88 is: 88,961.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,176.91 : 163,086.41 = 64,463.88 : x
  2. Step 2: Convert to fraction form
    118,176.91/163,086.41 = 64,463.88/x
  3. Step 3: Cross multiply
    118,176.91x = 163,086.41 × 64,463.88
  4. Step 4: Simplify right side
    118,176.91x = 10,513,183,536.60
  5. Step 5: Solve for x
    x = 10,513,183,536.60/118,176.91
  6. Step 6: Final answer
    x = 88,961.40

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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.