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Finding the Fourth Proportional to 718,257.60, 991,195.56 and 412,353.81

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Solution

The fourth proportional to 718,257.60, 991,195.56 and 412,353.81 is: 569,048.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,257.60 : 991,195.56 = 412,353.81 : x
  2. Step 2: Convert to fraction form
    718,257.60/991,195.56 = 412,353.81/x
  3. Step 3: Cross multiply
    718,257.60x = 991,195.56 × 412,353.81
  4. Step 4: Simplify right side
    718,257.60x = 408,723,265,621.08
  5. Step 5: Solve for x
    x = 408,723,265,621.08/718,257.60
  6. Step 6: Final answer
    x = 569,048.30

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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.