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Finding the Fourth Proportional to 122,673.72, 169,264.68 and 71,676.59

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Solution

The fourth proportional to 122,673.72, 169,264.68 and 71,676.59 is: 98,899.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,673.72 : 169,264.68 = 71,676.59 : x
  2. Step 2: Convert to fraction form
    122,673.72/169,264.68 = 71,676.59/x
  3. Step 3: Cross multiply
    122,673.72x = 169,264.68 × 71,676.59
  4. Step 4: Simplify right side
    122,673.72x = 12,132,315,627.40
  5. Step 5: Solve for x
    x = 12,132,315,627.40/122,673.72
  6. Step 6: Final answer
    x = 98,899.06

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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.