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Finding the Fourth Proportional to 53,955.40, 80,933.10 and 53,609.80

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Solution

The fourth proportional to 53,955.40, 80,933.10 and 53,609.80 is: 80,414.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,955.40 : 80,933.10 = 53,609.80 : x
  2. Step 2: Convert to fraction form
    53,955.40/80,933.10 = 53,609.80/x
  3. Step 3: Cross multiply
    53,955.40x = 80,933.10 × 53,609.80
  4. Step 4: Simplify right side
    53,955.40x = 4,338,807,304.38
  5. Step 5: Solve for x
    x = 4,338,807,304.38/53,955.40
  6. Step 6: Final answer
    x = 80,414.70

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Similar ratio
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1.5x scale

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.