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Finding the Fourth Proportional to 543,113.12, 749,462.24 and 328,126.16

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Solution

The fourth proportional to 543,113.12, 749,462.24 and 328,126.16 is: 452,793.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,113.12 : 749,462.24 = 328,126.16 : x
  2. Step 2: Convert to fraction form
    543,113.12/749,462.24 = 328,126.16/x
  3. Step 3: Cross multiply
    543,113.12x = 749,462.24 × 328,126.16
  4. Step 4: Simplify right side
    543,113.12x = 245,918,166,876.20
  5. Step 5: Solve for x
    x = 245,918,166,876.20/543,113.12
  6. Step 6: Final answer
    x = 452,793.64

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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.