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Finding the Fourth Proportional to 124,647.48, 172,017.12 and 68,062.56

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Solution

The fourth proportional to 124,647.48, 172,017.12 and 68,062.56 is: 93,928.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,647.48 : 172,017.12 = 68,062.56 : x
  2. Step 2: Convert to fraction form
    124,647.48/172,017.12 = 68,062.56/x
  3. Step 3: Cross multiply
    124,647.48x = 172,017.12 × 68,062.56
  4. Step 4: Simplify right side
    124,647.48x = 11,707,925,551.03
  5. Step 5: Solve for x
    x = 11,707,925,551.03/124,647.48
  6. Step 6: Final answer
    x = 93,928.30

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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.