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Finding the Fourth Proportional to 124,209.50, 171,409.52 and 67,621.28

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Solution

The fourth proportional to 124,209.50, 171,409.52 and 67,621.28 is: 93,317.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,209.50 : 171,409.52 = 67,621.28 : x
  2. Step 2: Convert to fraction form
    124,209.50/171,409.52 = 67,621.28/x
  3. Step 3: Cross multiply
    124,209.50x = 171,409.52 × 67,621.28
  4. Step 4: Simplify right side
    124,209.50x = 11,590,930,808.48
  5. Step 5: Solve for x
    x = 11,590,930,808.48/124,209.50
  6. Step 6: Final answer
    x = 93,317.59

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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.