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Finding the Fourth Proportional to 124,460.70, 171,755.42 and 67,872.08

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Solution

The fourth proportional to 124,460.70, 171,755.42 and 67,872.08 is: 93,663.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,460.70 : 171,755.42 = 67,872.08 : x
  2. Step 2: Convert to fraction form
    124,460.70/171,755.42 = 67,872.08/x
  3. Step 3: Cross multiply
    124,460.70x = 171,755.42 × 67,872.08
  4. Step 4: Simplify right side
    124,460.70x = 11,657,397,606.67
  5. Step 5: Solve for x
    x = 11,657,397,606.67/124,460.70
  6. Step 6: Final answer
    x = 93,663.28

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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.