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Finding the Fourth Proportional to 32,878.58, 45,358.50 and 20,126.96

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Solution

The fourth proportional to 32,878.58, 45,358.50 and 20,126.96 is: 27,766.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,878.58 : 45,358.50 = 20,126.96 : x
  2. Step 2: Convert to fraction form
    32,878.58/45,358.50 = 20,126.96/x
  3. Step 3: Cross multiply
    32,878.58x = 45,358.50 × 20,126.96
  4. Step 4: Simplify right side
    32,878.58x = 912,928,715.16
  5. Step 5: Solve for x
    x = 912,928,715.16/32,878.58
  6. Step 6: Final answer
    x = 27,766.67

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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.