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Finding the Fourth Proportional to 117,355.76, 176,031.72 and 28,609.52

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Solution

The fourth proportional to 117,355.76, 176,031.72 and 28,609.52 is: 42,913.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,355.76 : 176,031.72 = 28,609.52 : x
  2. Step 2: Convert to fraction form
    117,355.76/176,031.72 = 28,609.52/x
  3. Step 3: Cross multiply
    117,355.76x = 176,031.72 × 28,609.52
  4. Step 4: Simplify right side
    117,355.76x = 5,036,183,013.97
  5. Step 5: Solve for x
    x = 5,036,183,013.97/117,355.76
  6. Step 6: Final answer
    x = 42,913.81

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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.