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Finding the Fourth Proportional to 117,489.45, 176,237.60 and 28,742.93

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Solution

The fourth proportional to 117,489.45, 176,237.60 and 28,742.93 is: 43,115.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,489.45 : 176,237.60 = 28,742.93 : x
  2. Step 2: Convert to fraction form
    117,489.45/176,237.60 = 28,742.93/x
  3. Step 3: Cross multiply
    117,489.45x = 176,237.60 × 28,742.93
  4. Step 4: Simplify right side
    117,489.45x = 5,065,585,000.17
  5. Step 5: Solve for x
    x = 5,065,585,000.17/117,489.45
  6. Step 6: Final answer
    x = 43,115.23

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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.