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Finding the Fourth Proportional to 117,591.58, 162,343.69 and 77,422.11

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Solution

The fourth proportional to 117,591.58, 162,343.69 and 77,422.11 is: 106,886.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,591.58 : 162,343.69 = 77,422.11 : x
  2. Step 2: Convert to fraction form
    117,591.58/162,343.69 = 77,422.11/x
  3. Step 3: Cross multiply
    117,591.58x = 162,343.69 × 77,422.11
  4. Step 4: Simplify right side
    117,591.58x = 12,568,991,024.99
  5. Step 5: Solve for x
    x = 12,568,991,024.99/117,591.58
  6. Step 6: Final answer
    x = 106,886.83

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1.5x scale

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.