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Finding the Fourth Proportional to 141,881.20, 212,821.80 and 62,911.60

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Solution

The fourth proportional to 141,881.20, 212,821.80 and 62,911.60 is: 94,367.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,881.20 : 212,821.80 = 62,911.60 : x
  2. Step 2: Convert to fraction form
    141,881.20/212,821.80 = 62,911.60/x
  3. Step 3: Cross multiply
    141,881.20x = 212,821.80 × 62,911.60
  4. Step 4: Simplify right side
    141,881.20x = 13,388,959,952.88
  5. Step 5: Solve for x
    x = 13,388,959,952.88/141,881.20
  6. Step 6: Final answer
    x = 94,367.40

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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.