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Finding the Fourth Proportional to 560,194.20, 772,995.02 and 318,471.57

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Solution

The fourth proportional to 560,194.20, 772,995.02 and 318,471.57 is: 439,449.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,194.20 : 772,995.02 = 318,471.57 : x
  2. Step 2: Convert to fraction form
    560,194.20/772,995.02 = 318,471.57/x
  3. Step 3: Cross multiply
    560,194.20x = 772,995.02 × 318,471.57
  4. Step 4: Simplify right side
    560,194.20x = 246,176,936,029.22
  5. Step 5: Solve for x
    x = 246,176,936,029.22/560,194.20
  6. Step 6: Final answer
    x = 439,449.28

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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.