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Finding the Fourth Proportional to 86,178.56, 129,300.80 and 33,624.68

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Solution

The fourth proportional to 86,178.56, 129,300.80 and 33,624.68 is: 50,449.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,178.56 : 129,300.80 = 33,624.68 : x
  2. Step 2: Convert to fraction form
    86,178.56/129,300.80 = 33,624.68/x
  3. Step 3: Cross multiply
    86,178.56x = 129,300.80 × 33,624.68
  4. Step 4: Simplify right side
    86,178.56x = 4,347,698,023.74
  5. Step 5: Solve for x
    x = 4,347,698,023.74/86,178.56
  6. Step 6: Final answer
    x = 50,449.88

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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.