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Finding the Fourth Proportional to 124,308.48, 171,541.14 and 75,991.34

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Solution

The fourth proportional to 124,308.48, 171,541.14 and 75,991.34 is: 104,865.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,308.48 : 171,541.14 = 75,991.34 : x
  2. Step 2: Convert to fraction form
    124,308.48/171,541.14 = 75,991.34/x
  3. Step 3: Cross multiply
    124,308.48x = 171,541.14 × 75,991.34
  4. Step 4: Simplify right side
    124,308.48x = 13,035,641,237.61
  5. Step 5: Solve for x
    x = 13,035,641,237.61/124,308.48
  6. Step 6: Final answer
    x = 104,865.26

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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.