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Finding the Fourth Proportional to 113,908.60, 170,846.70 and 39,032.20

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Solution

The fourth proportional to 113,908.60, 170,846.70 and 39,032.20 is: 58,542.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,908.60 : 170,846.70 = 39,032.20 : x
  2. Step 2: Convert to fraction form
    113,908.60/170,846.70 = 39,032.20/x
  3. Step 3: Cross multiply
    113,908.60x = 170,846.70 × 39,032.20
  4. Step 4: Simplify right side
    113,908.60x = 6,668,522,563.74
  5. Step 5: Solve for x
    x = 6,668,522,563.74/113,908.60
  6. Step 6: Final answer
    x = 58,542.75

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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.