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Finding the Fourth Proportional to 516,900.90, 774,559.98 and 347,794.86

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Solution

The fourth proportional to 516,900.90, 774,559.98 and 347,794.86 is: 521,159.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,900.90 : 774,559.98 = 347,794.86 : x
  2. Step 2: Convert to fraction form
    516,900.90/774,559.98 = 347,794.86/x
  3. Step 3: Cross multiply
    516,900.90x = 774,559.98 × 347,794.86
  4. Step 4: Simplify right side
    516,900.90x = 269,387,979,805.70
  5. Step 5: Solve for x
    x = 269,387,979,805.70/516,900.90
  6. Step 6: Final answer
    x = 521,159.82

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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.