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Finding the Fourth Proportional to 675,888, 932,661.61 and 403,901.74

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Solution

The fourth proportional to 675,888, 932,661.61 and 403,901.74 is: 557,346.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,888 : 932,661.61 = 403,901.74 : x
  2. Step 2: Convert to fraction form
    675,888/932,661.61 = 403,901.74/x
  3. Step 3: Cross multiply
    675,888x = 932,661.61 × 403,901.74
  4. Step 4: Simplify right side
    675,888x = 376,703,647,110.20
  5. Step 5: Solve for x
    x = 376,703,647,110.20/675,888
  6. Step 6: Final answer
    x = 557,346.26

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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.