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Finding the Fourth Proportional to 58,558.29, 80,810.47 and 31,700.80

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Solution

The fourth proportional to 58,558.29, 80,810.47 and 31,700.80 is: 43,747.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,558.29 : 80,810.47 = 31,700.80 : x
  2. Step 2: Convert to fraction form
    58,558.29/80,810.47 = 31,700.80/x
  3. Step 3: Cross multiply
    58,558.29x = 80,810.47 × 31,700.80
  4. Step 4: Simplify right side
    58,558.29x = 2,561,756,266.10
  5. Step 5: Solve for x
    x = 2,561,756,266.10/58,558.29
  6. Step 6: Final answer
    x = 43,747.12

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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.