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Finding the Fourth Proportional to 516,979.07, 774,139.99 and 316,692.24

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Solution

The fourth proportional to 516,979.07, 774,139.99 and 316,692.24 is: 474,224.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,979.07 : 774,139.99 = 316,692.24 : x
  2. Step 2: Convert to fraction form
    516,979.07/774,139.99 = 316,692.24/x
  3. Step 3: Cross multiply
    516,979.07x = 774,139.99 × 316,692.24
  4. Step 4: Simplify right side
    516,979.07x = 245,164,122,052.52
  5. Step 5: Solve for x
    x = 245,164,122,052.52/516,979.07
  6. Step 6: Final answer
    x = 474,224.47

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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.