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Finding the Fourth Proportional to 57,798.24, 79,761.12 and 31,302.24

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Solution

The fourth proportional to 57,798.24, 79,761.12 and 31,302.24 is: 43,196.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,798.24 : 79,761.12 = 31,302.24 : x
  2. Step 2: Convert to fraction form
    57,798.24/79,761.12 = 31,302.24/x
  3. Step 3: Cross multiply
    57,798.24x = 79,761.12 × 31,302.24
  4. Step 4: Simplify right side
    57,798.24x = 2,496,701,720.91
  5. Step 5: Solve for x
    x = 2,496,701,720.91/57,798.24
  6. Step 6: Final answer
    x = 43,196.85

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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.