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Finding the Fourth Proportional to 575,789.21, 794,177.75 and 499,171.31

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Solution

The fourth proportional to 575,789.21, 794,177.75 and 499,171.31 is: 688,499.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,789.21 : 794,177.75 = 499,171.31 : x
  2. Step 2: Convert to fraction form
    575,789.21/794,177.75 = 499,171.31/x
  3. Step 3: Cross multiply
    575,789.21x = 794,177.75 × 499,171.31
  4. Step 4: Simplify right side
    575,789.21x = 396,430,747,840.35
  5. Step 5: Solve for x
    x = 396,430,747,840.35/575,789.21
  6. Step 6: Final answer
    x = 688,499.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.