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Finding the Fourth Proportional to 117,871.77, 162,649.72 and 69,470.55

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Solution

The fourth proportional to 117,871.77, 162,649.72 and 69,470.55 is: 95,861.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,871.77 : 162,649.72 = 69,470.55 : x
  2. Step 2: Convert to fraction form
    117,871.77/162,649.72 = 69,470.55/x
  3. Step 3: Cross multiply
    117,871.77x = 162,649.72 × 69,470.55
  4. Step 4: Simplify right side
    117,871.77x = 11,299,365,505.75
  5. Step 5: Solve for x
    x = 11,299,365,505.75/117,871.77
  6. Step 6: Final answer
    x = 95,861.51

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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.