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Finding the Fourth Proportional to 58,221.80, 87,332.70 and 51,540.20

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Solution

The fourth proportional to 58,221.80, 87,332.70 and 51,540.20 is: 77,310.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,221.80 : 87,332.70 = 51,540.20 : x
  2. Step 2: Convert to fraction form
    58,221.80/87,332.70 = 51,540.20/x
  3. Step 3: Cross multiply
    58,221.80x = 87,332.70 × 51,540.20
  4. Step 4: Simplify right side
    58,221.80x = 4,501,144,824.54
  5. Step 5: Solve for x
    x = 4,501,144,824.54/58,221.80
  6. Step 6: Final answer
    x = 77,310.30

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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.