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Finding the Fourth Proportional to 118,471.66, 163,490.49 and 64,756.66

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Solution

The fourth proportional to 118,471.66, 163,490.49 and 64,756.66 is: 89,363.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,471.66 : 163,490.49 = 64,756.66 : x
  2. Step 2: Convert to fraction form
    118,471.66/163,490.49 = 64,756.66/x
  3. Step 3: Cross multiply
    118,471.66x = 163,490.49 × 64,756.66
  4. Step 4: Simplify right side
    118,471.66x = 10,587,098,074.16
  5. Step 5: Solve for x
    x = 10,587,098,074.16/118,471.66
  6. Step 6: Final answer
    x = 89,363.97

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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.