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Finding the Fourth Proportional to 124,584.29, 171,915.29 and 69,389.40

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Solution

The fourth proportional to 124,584.29, 171,915.29 and 69,389.40 is: 95,751.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,584.29 : 171,915.29 = 69,389.40 : x
  2. Step 2: Convert to fraction form
    124,584.29/171,915.29 = 69,389.40/x
  3. Step 3: Cross multiply
    124,584.29x = 171,915.29 × 69,389.40
  4. Step 4: Simplify right side
    124,584.29x = 11,929,099,381.87
  5. Step 5: Solve for x
    x = 11,929,099,381.87/124,584.29
  6. Step 6: Final answer
    x = 95,751.23

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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.