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Finding the Fourth Proportional to 122,572.90, 169,170.29 and 114,568.48

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Solution

The fourth proportional to 122,572.90, 169,170.29 and 114,568.48 is: 158,122.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,572.90 : 169,170.29 = 114,568.48 : x
  2. Step 2: Convert to fraction form
    122,572.90/169,170.29 = 114,568.48/x
  3. Step 3: Cross multiply
    122,572.90x = 169,170.29 × 114,568.48
  4. Step 4: Simplify right side
    122,572.90x = 19,381,582,986.46
  5. Step 5: Solve for x
    x = 19,381,582,986.46/122,572.90
  6. Step 6: Final answer
    x = 158,122.90

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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.