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Finding the Fourth Proportional to 519,689.75, 717,171.90 and 293,349.83

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Solution

The fourth proportional to 519,689.75, 717,171.90 and 293,349.83 is: 404,822.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,689.75 : 717,171.90 = 293,349.83 : x
  2. Step 2: Convert to fraction form
    519,689.75/717,171.90 = 293,349.83/x
  3. Step 3: Cross multiply
    519,689.75x = 717,171.90 × 293,349.83
  4. Step 4: Simplify right side
    519,689.75x = 210,382,254,945.78
  5. Step 5: Solve for x
    x = 210,382,254,945.78/519,689.75
  6. Step 6: Final answer
    x = 404,822.79

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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.