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Finding the Fourth Proportional to 58,757.69, 81,085.15 and 31,899.66

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Solution

The fourth proportional to 58,757.69, 81,085.15 and 31,899.66 is: 44,021.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,757.69 : 81,085.15 = 31,899.66 : x
  2. Step 2: Convert to fraction form
    58,757.69/81,085.15 = 31,899.66/x
  3. Step 3: Cross multiply
    58,757.69x = 81,085.15 × 31,899.66
  4. Step 4: Simplify right side
    58,757.69x = 2,586,588,451.85
  5. Step 5: Solve for x
    x = 2,586,588,451.85/58,757.69
  6. Step 6: Final answer
    x = 44,021.28

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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.