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Finding the Fourth Proportional to 113,049.67, 169,578.12 and 56,859.11

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Solution

The fourth proportional to 113,049.67, 169,578.12 and 56,859.11 is: 85,290.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,049.67 : 169,578.12 = 56,859.11 : x
  2. Step 2: Convert to fraction form
    113,049.67/169,578.12 = 56,859.11/x
  3. Step 3: Cross multiply
    113,049.67x = 169,578.12 × 56,859.11
  4. Step 4: Simplify right side
    113,049.67x = 9,642,060,130.78
  5. Step 5: Solve for x
    x = 9,642,060,130.78/113,049.67
  6. Step 6: Final answer
    x = 85,290.48

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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.