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Finding the Fourth Proportional to 520,953.86, 718,891.88 and 291,540.29

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Solution

The fourth proportional to 520,953.86, 718,891.88 and 291,540.29 is: 402,311.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,953.86 : 718,891.88 = 291,540.29 : x
  2. Step 2: Convert to fraction form
    520,953.86/718,891.88 = 291,540.29/x
  3. Step 3: Cross multiply
    520,953.86x = 718,891.88 × 291,540.29
  4. Step 4: Simplify right side
    520,953.86x = 209,585,942,121.68
  5. Step 5: Solve for x
    x = 209,585,942,121.68/520,953.86
  6. Step 6: Final answer
    x = 402,311.91

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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.