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Finding the Fourth Proportional to 855,632, 1,181,083.20 and 497,936

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Solution

The fourth proportional to 855,632, 1,181,083.20 and 497,936 is: 687,332.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,632 : 1,181,083.20 = 497,936 : x
  2. Step 2: Convert to fraction form
    855,632/1,181,083.20 = 497,936/x
  3. Step 3: Cross multiply
    855,632x = 1,181,083.20 × 497,936
  4. Step 4: Simplify right side
    855,632x = 588,103,844,275.20
  5. Step 5: Solve for x
    x = 588,103,844,275.20/855,632
  6. Step 6: Final answer
    x = 687,332.69

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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.