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Finding the Fourth Proportional to 86,520.36, 129,780.54 and 33,954.60

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Solution

The fourth proportional to 86,520.36, 129,780.54 and 33,954.60 is: 50,931.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,520.36 : 129,780.54 = 33,954.60 : x
  2. Step 2: Convert to fraction form
    86,520.36/129,780.54 = 33,954.60/x
  3. Step 3: Cross multiply
    86,520.36x = 129,780.54 × 33,954.60
  4. Step 4: Simplify right side
    86,520.36x = 4,406,646,323.48
  5. Step 5: Solve for x
    x = 4,406,646,323.48/86,520.36
  6. Step 6: Final answer
    x = 50,931.90

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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.