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Finding the Fourth Proportional to 66,592.86, 91,874.22 and 39,363.20

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Solution

The fourth proportional to 66,592.86, 91,874.22 and 39,363.20 is: 54,307.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,592.86 : 91,874.22 = 39,363.20 : x
  2. Step 2: Convert to fraction form
    66,592.86/91,874.22 = 39,363.20/x
  3. Step 3: Cross multiply
    66,592.86x = 91,874.22 × 39,363.20
  4. Step 4: Simplify right side
    66,592.86x = 3,616,463,296.70
  5. Step 5: Solve for x
    x = 3,616,463,296.70/66,592.86
  6. Step 6: Final answer
    x = 54,307.07

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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.