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Finding the Fourth Proportional to 543,988.50, 816,011.91 and 170,040.66

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Solution

The fourth proportional to 543,988.50, 816,011.91 and 170,040.66 is: 255,070.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,988.50 : 816,011.91 = 170,040.66 : x
  2. Step 2: Convert to fraction form
    543,988.50/816,011.91 = 170,040.66/x
  3. Step 3: Cross multiply
    543,988.50x = 816,011.91 × 170,040.66
  4. Step 4: Simplify right side
    543,988.50x = 138,755,203,744.26
  5. Step 5: Solve for x
    x = 138,755,203,744.26/543,988.50
  6. Step 6: Final answer
    x = 255,070.10

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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.