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Finding the Fourth Proportional to 118,726.44, 163,842.42 and 65,011.42

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Solution

The fourth proportional to 118,726.44, 163,842.42 and 65,011.42 is: 89,715.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,726.44 : 163,842.42 = 65,011.42 : x
  2. Step 2: Convert to fraction form
    118,726.44/163,842.42 = 65,011.42/x
  3. Step 3: Cross multiply
    118,726.44x = 163,842.42 × 65,011.42
  4. Step 4: Simplify right side
    118,726.44x = 10,651,628,380.44
  5. Step 5: Solve for x
    x = 10,651,628,380.44/118,726.44
  6. Step 6: Final answer
    x = 89,715.72

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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.