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Finding the Fourth Proportional to 124,617.16, 171,970.78 and 68,028.52

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Solution

The fourth proportional to 124,617.16, 171,970.78 and 68,028.52 is: 93,878.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,617.16 : 171,970.78 = 68,028.52 : x
  2. Step 2: Convert to fraction form
    124,617.16/171,970.78 = 68,028.52/x
  3. Step 3: Cross multiply
    124,617.16x = 171,970.78 × 68,028.52
  4. Step 4: Simplify right side
    124,617.16x = 11,698,917,646.65
  5. Step 5: Solve for x
    x = 11,698,917,646.65/124,617.16
  6. Step 6: Final answer
    x = 93,878.87

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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.