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Finding the Fourth Proportional to 53,462.80, 80,213.40 and 51,542.80

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Solution

The fourth proportional to 53,462.80, 80,213.40 and 51,542.80 is: 77,332.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,462.80 : 80,213.40 = 51,542.80 : x
  2. Step 2: Convert to fraction form
    53,462.80/80,213.40 = 51,542.80/x
  3. Step 3: Cross multiply
    53,462.80x = 80,213.40 × 51,542.80
  4. Step 4: Simplify right side
    53,462.80x = 4,134,423,233.52
  5. Step 5: Solve for x
    x = 4,134,423,233.52/53,462.80
  6. Step 6: Final answer
    x = 77,332.71

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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.