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Finding the Fourth Proportional to 124,427.80, 186,641.70 and 41,321.80

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Solution

The fourth proportional to 124,427.80, 186,641.70 and 41,321.80 is: 61,982.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,427.80 : 186,641.70 = 41,321.80 : x
  2. Step 2: Convert to fraction form
    124,427.80/186,641.70 = 41,321.80/x
  3. Step 3: Cross multiply
    124,427.80x = 186,641.70 × 41,321.80
  4. Step 4: Simplify right side
    124,427.80x = 7,712,370,999.06
  5. Step 5: Solve for x
    x = 7,712,370,999.06/124,427.80
  6. Step 6: Final answer
    x = 61,982.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.