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Finding the Fourth Proportional to 61,228, 91,874.68 and 26,159.60

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Solution

The fourth proportional to 61,228, 91,874.68 and 26,159.60 is: 39,253.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,228 : 91,874.68 = 26,159.60 : x
  2. Step 2: Convert to fraction form
    61,228/91,874.68 = 26,159.60/x
  3. Step 3: Cross multiply
    61,228x = 91,874.68 × 26,159.60
  4. Step 4: Simplify right side
    61,228x = 2,403,404,878.93
  5. Step 5: Solve for x
    x = 2,403,404,878.93/61,228
  6. Step 6: Final answer
    x = 39,253.36

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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.