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Finding the Fourth Proportional to 124,653.96, 172,021.78 and 68,064.93

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Solution

The fourth proportional to 124,653.96, 172,021.78 and 68,064.93 is: 93,929.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,653.96 : 172,021.78 = 68,064.93 : x
  2. Step 2: Convert to fraction form
    124,653.96/172,021.78 = 68,064.93/x
  3. Step 3: Cross multiply
    124,653.96x = 172,021.78 × 68,064.93
  4. Step 4: Simplify right side
    124,653.96x = 11,708,650,414.18
  5. Step 5: Solve for x
    x = 11,708,650,414.18/124,653.96
  6. Step 6: Final answer
    x = 93,929.23

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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.