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Finding the Fourth Proportional to 113,694.48, 170,541.72 and 39,805.20

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Solution

The fourth proportional to 113,694.48, 170,541.72 and 39,805.20 is: 59,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,694.48 : 170,541.72 = 39,805.20 : x
  2. Step 2: Convert to fraction form
    113,694.48/170,541.72 = 39,805.20/x
  3. Step 3: Cross multiply
    113,694.48x = 170,541.72 × 39,805.20
  4. Step 4: Simplify right side
    113,694.48x = 6,788,447,272.94
  5. Step 5: Solve for x
    x = 6,788,447,272.94/113,694.48
  6. Step 6: Final answer
    x = 59,707.80

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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.