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Finding the Fourth Proportional to 53,576.80, 73,915.92 and 30,899.68

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Solution

The fourth proportional to 53,576.80, 73,915.92 and 30,899.68 is: 42,629.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,576.80 : 73,915.92 = 30,899.68 : x
  2. Step 2: Convert to fraction form
    53,576.80/73,915.92 = 30,899.68/x
  3. Step 3: Cross multiply
    53,576.80x = 73,915.92 × 30,899.68
  4. Step 4: Simplify right side
    53,576.80x = 2,283,978,274.91
  5. Step 5: Solve for x
    x = 2,283,978,274.91/53,576.80
  6. Step 6: Final answer
    x = 42,629.99

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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.