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Finding the Fourth Proportional to 111,761.40, 154,232.25 and 64,014.71

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Solution

The fourth proportional to 111,761.40, 154,232.25 and 64,014.71 is: 88,341.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,761.40 : 154,232.25 = 64,014.71 : x
  2. Step 2: Convert to fraction form
    111,761.40/154,232.25 = 64,014.71/x
  3. Step 3: Cross multiply
    111,761.40x = 154,232.25 × 64,014.71
  4. Step 4: Simplify right side
    111,761.40x = 9,873,131,985.24
  5. Step 5: Solve for x
    x = 9,873,131,985.24/111,761.40
  6. Step 6: Final answer
    x = 88,341.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.