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Finding the Fourth Proportional to 127,955.32, 191,955.68 and 61,515.88

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Solution

The fourth proportional to 127,955.32, 191,955.68 and 61,515.88 is: 92,284.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,955.32 : 191,955.68 = 61,515.88 : x
  2. Step 2: Convert to fraction form
    127,955.32/191,955.68 = 61,515.88/x
  3. Step 3: Cross multiply
    127,955.32x = 191,955.68 × 61,515.88
  4. Step 4: Simplify right side
    127,955.32x = 11,808,322,576.20
  5. Step 5: Solve for x
    x = 11,808,322,576.20/127,955.32
  6. Step 6: Final answer
    x = 92,284.73

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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.