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Finding the Fourth Proportional to 48,718.71, 72,866.92 and 28,680.44

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Solution

The fourth proportional to 48,718.71, 72,866.92 and 28,680.44 is: 42,896.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,718.71 : 72,866.92 = 28,680.44 : x
  2. Step 2: Convert to fraction form
    48,718.71/72,866.92 = 28,680.44/x
  3. Step 3: Cross multiply
    48,718.71x = 72,866.92 × 28,680.44
  4. Step 4: Simplify right side
    48,718.71x = 2,089,855,327.04
  5. Step 5: Solve for x
    x = 2,089,855,327.04/48,718.71
  6. Step 6: Final answer
    x = 42,896.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.