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Finding the Fourth Proportional to 83,344.98, 115,005.96 and 66,392.40

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Solution

The fourth proportional to 83,344.98, 115,005.96 and 66,392.40 is: 91,613.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,344.98 : 115,005.96 = 66,392.40 : x
  2. Step 2: Convert to fraction form
    83,344.98/115,005.96 = 66,392.40/x
  3. Step 3: Cross multiply
    83,344.98x = 115,005.96 × 66,392.40
  4. Step 4: Simplify right side
    83,344.98x = 7,635,521,698.70
  5. Step 5: Solve for x
    x = 7,635,521,698.70/83,344.98
  6. Step 6: Final answer
    x = 91,613.46

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1.5x scale

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.