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Finding the Fourth Proportional to 58,675.89, 80,972.70 and 31,818.32

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Solution

The fourth proportional to 58,675.89, 80,972.70 and 31,818.32 is: 43,909.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,675.89 : 80,972.70 = 31,818.32 : x
  2. Step 2: Convert to fraction form
    58,675.89/80,972.70 = 31,818.32/x
  3. Step 3: Cross multiply
    58,675.89x = 80,972.70 × 31,818.32
  4. Step 4: Simplify right side
    58,675.89x = 2,576,414,715.91
  5. Step 5: Solve for x
    x = 2,576,414,715.91/58,675.89
  6. Step 6: Final answer
    x = 43,909.26

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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.