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Finding the Fourth Proportional to 169,531.72, 254,120.32 and 57,173.12

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Solution

The fourth proportional to 169,531.72, 254,120.32 and 57,173.12 is: 85,699.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,531.72 : 254,120.32 = 57,173.12 : x
  2. Step 2: Convert to fraction form
    169,531.72/254,120.32 = 57,173.12/x
  3. Step 3: Cross multiply
    169,531.72x = 254,120.32 × 57,173.12
  4. Step 4: Simplify right side
    169,531.72x = 14,528,851,549.80
  5. Step 5: Solve for x
    x = 14,528,851,549.80/169,531.72
  6. Step 6: Final answer
    x = 85,699.90

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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.