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Finding the Fourth Proportional to 117,759.76, 176,686.83 and 42,885.12

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Solution

The fourth proportional to 117,759.76, 176,686.83 and 42,885.12 is: 64,344.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,759.76 : 176,686.83 = 42,885.12 : x
  2. Step 2: Convert to fraction form
    117,759.76/176,686.83 = 42,885.12/x
  3. Step 3: Cross multiply
    117,759.76x = 176,686.83 × 42,885.12
  4. Step 4: Simplify right side
    117,759.76x = 7,577,235,906.97
  5. Step 5: Solve for x
    x = 7,577,235,906.97/117,759.76
  6. Step 6: Final answer
    x = 64,344.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.