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Finding the Fourth Proportional to 124,597.90, 171,945.11 and 68,009.28

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Solution

The fourth proportional to 124,597.90, 171,945.11 and 68,009.28 is: 93,852.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,597.90 : 171,945.11 = 68,009.28 : x
  2. Step 2: Convert to fraction form
    124,597.90/171,945.11 = 68,009.28/x
  3. Step 3: Cross multiply
    124,597.90x = 171,945.11 × 68,009.28
  4. Step 4: Simplify right side
    124,597.90x = 11,693,863,130.62
  5. Step 5: Solve for x
    x = 11,693,863,130.62/124,597.90
  6. Step 6: Final answer
    x = 93,852.81

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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.