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Finding the Fourth Proportional to 861,696.86, 1,291,646.79 and 482,061

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Solution

The fourth proportional to 861,696.86, 1,291,646.79 and 482,061 is: 722,588.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,696.86 : 1,291,646.79 = 482,061 : x
  2. Step 2: Convert to fraction form
    861,696.86/1,291,646.79 = 482,061/x
  3. Step 3: Cross multiply
    861,696.86x = 1,291,646.79 × 482,061
  4. Step 4: Simplify right side
    861,696.86x = 622,652,543,234.19
  5. Step 5: Solve for x
    x = 622,652,543,234.19/861,696.86
  6. Step 6: Final answer
    x = 722,588.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.