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Finding the Fourth Proportional to 48,701.90, 73,060.15 and 20,621.90

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Solution

The fourth proportional to 48,701.90, 73,060.15 and 20,621.90 is: 30,935.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,701.90 : 73,060.15 = 20,621.90 : x
  2. Step 2: Convert to fraction form
    48,701.90/73,060.15 = 20,621.90/x
  3. Step 3: Cross multiply
    48,701.90x = 73,060.15 × 20,621.90
  4. Step 4: Simplify right side
    48,701.90x = 1,506,639,107.29
  5. Step 5: Solve for x
    x = 1,506,639,107.29/48,701.90
  6. Step 6: Final answer
    x = 30,935.94

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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.