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Finding the Fourth Proportional to 117,689.76, 176,435.20 and 51,079.52

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Solution

The fourth proportional to 117,689.76, 176,435.20 and 51,079.52 is: 76,576.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,689.76 : 176,435.20 = 51,079.52 : x
  2. Step 2: Convert to fraction form
    117,689.76/176,435.20 = 51,079.52/x
  3. Step 3: Cross multiply
    117,689.76x = 176,435.20 × 51,079.52
  4. Step 4: Simplify right side
    117,689.76x = 9,012,225,327.10
  5. Step 5: Solve for x
    x = 9,012,225,327.10/117,689.76
  6. Step 6: Final answer
    x = 76,576.12

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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.