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Finding the Fourth Proportional to 58,221.72, 87,343.74 and 18,768.24

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Solution

The fourth proportional to 58,221.72, 87,343.74 and 18,768.24 is: 28,155.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,221.72 : 87,343.74 = 18,768.24 : x
  2. Step 2: Convert to fraction form
    58,221.72/87,343.74 = 18,768.24/x
  3. Step 3: Cross multiply
    58,221.72x = 87,343.74 × 18,768.24
  4. Step 4: Simplify right side
    58,221.72x = 1,639,288,274.82
  5. Step 5: Solve for x
    x = 1,639,288,274.82/58,221.72
  6. Step 6: Final answer
    x = 28,155.96

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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.