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Finding the Fourth Proportional to 117,237.81, 175,854.27 and 28,491.78

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Solution

The fourth proportional to 117,237.81, 175,854.27 and 28,491.78 is: 42,737.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,237.81 : 175,854.27 = 28,491.78 : x
  2. Step 2: Convert to fraction form
    117,237.81/175,854.27 = 28,491.78/x
  3. Step 3: Cross multiply
    117,237.81x = 175,854.27 × 28,491.78
  4. Step 4: Simplify right side
    117,237.81x = 5,010,401,172.90
  5. Step 5: Solve for x
    x = 5,010,401,172.90/117,237.81
  6. Step 6: Final answer
    x = 42,737.08

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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.