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Finding the Fourth Proportional to 543,166.70, 814,750.05 and 318,634.70

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Solution

The fourth proportional to 543,166.70, 814,750.05 and 318,634.70 is: 477,952.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,166.70 : 814,750.05 = 318,634.70 : x
  2. Step 2: Convert to fraction form
    543,166.70/814,750.05 = 318,634.70/x
  3. Step 3: Cross multiply
    543,166.70x = 814,750.05 × 318,634.70
  4. Step 4: Simplify right side
    543,166.70x = 259,607,637,756.74
  5. Step 5: Solve for x
    x = 259,607,637,756.74/543,166.70
  6. Step 6: Final answer
    x = 477,952.05

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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.