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Finding the Fourth Proportional to 532,043.10, 797,887.62 and 172,128.48

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Solution

The fourth proportional to 532,043.10, 797,887.62 and 172,128.48 is: 258,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,043.10 : 797,887.62 = 172,128.48 : x
  2. Step 2: Convert to fraction form
    532,043.10/797,887.62 = 172,128.48/x
  3. Step 3: Cross multiply
    532,043.10x = 797,887.62 × 172,128.48
  4. Step 4: Simplify right side
    532,043.10x = 137,339,183,241.42
  5. Step 5: Solve for x
    x = 137,339,183,241.42/532,043.10
  6. Step 6: Final answer
    x = 258,135.45

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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.