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Finding the Fourth Proportional to 58,672.68, 80,968.90 and 31,815.24

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Solution

The fourth proportional to 58,672.68, 80,968.90 and 31,815.24 is: 43,905.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,672.68 : 80,968.90 = 31,815.24 : x
  2. Step 2: Convert to fraction form
    58,672.68/80,968.90 = 31,815.24/x
  3. Step 3: Cross multiply
    58,672.68x = 80,968.90 × 31,815.24
  4. Step 4: Simplify right side
    58,672.68x = 2,576,044,986.04
  5. Step 5: Solve for x
    x = 2,576,044,986.04/58,672.68
  6. Step 6: Final answer
    x = 43,905.36

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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.