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Finding the Fourth Proportional to 519,680.64, 717,145.60 and 293,324.64

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Solution

The fourth proportional to 519,680.64, 717,145.60 and 293,324.64 is: 404,780.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,680.64 : 717,145.60 = 293,324.64 : x
  2. Step 2: Convert to fraction form
    519,680.64/717,145.60 = 293,324.64/x
  3. Step 3: Cross multiply
    519,680.64x = 717,145.60 × 293,324.64
  4. Step 4: Simplify right side
    519,680.64x = 210,356,474,947.58
  5. Step 5: Solve for x
    x = 210,356,474,947.58/519,680.64
  6. Step 6: Final answer
    x = 404,780.28

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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.