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Finding the Fourth Proportional to 516,878.82, 774,526.86 and 347,772.69

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Solution

The fourth proportional to 516,878.82, 774,526.86 and 347,772.69 is: 521,126.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,878.82 : 774,526.86 = 347,772.69 : x
  2. Step 2: Convert to fraction form
    516,878.82/774,526.86 = 347,772.69/x
  3. Step 3: Cross multiply
    516,878.82x = 774,526.86 × 347,772.69
  4. Step 4: Simplify right side
    516,878.82x = 269,359,289,579.45
  5. Step 5: Solve for x
    x = 269,359,289,579.45/516,878.82
  6. Step 6: Final answer
    x = 521,126.58

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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.