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Finding the Fourth Proportional to 543,671.18, 815,528.37 and 169,694.18

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Solution

The fourth proportional to 543,671.18, 815,528.37 and 169,694.18 is: 254,548.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,671.18 : 815,528.37 = 169,694.18 : x
  2. Step 2: Convert to fraction form
    543,671.18/815,528.37 = 169,694.18/x
  3. Step 3: Cross multiply
    543,671.18x = 815,528.37 × 169,694.18
  4. Step 4: Simplify right side
    543,671.18x = 138,390,418,013.89
  5. Step 5: Solve for x
    x = 138,390,418,013.89/543,671.18
  6. Step 6: Final answer
    x = 254,548.01

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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.