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Finding the Fourth Proportional to 83,615.40, 125,627.90 and 62,879.40

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Solution

The fourth proportional to 83,615.40, 125,627.90 and 62,879.40 is: 94,473.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,615.40 : 125,627.90 = 62,879.40 : x
  2. Step 2: Convert to fraction form
    83,615.40/125,627.90 = 62,879.40/x
  3. Step 3: Cross multiply
    83,615.40x = 125,627.90 × 62,879.40
  4. Step 4: Simplify right side
    83,615.40x = 7,899,406,975.26
  5. Step 5: Solve for x
    x = 7,899,406,975.26/83,615.40
  6. Step 6: Final answer
    x = 94,473.11

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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.