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Finding the Fourth Proportional to 48,706.70, 73,019.55 and 20,648.30

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Solution

The fourth proportional to 48,706.70, 73,019.55 and 20,648.30 is: 30,955.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,706.70 : 73,019.55 = 20,648.30 : x
  2. Step 2: Convert to fraction form
    48,706.70/73,019.55 = 20,648.30/x
  3. Step 3: Cross multiply
    48,706.70x = 73,019.55 × 20,648.30
  4. Step 4: Simplify right side
    48,706.70x = 1,507,729,574.27
  5. Step 5: Solve for x
    x = 1,507,729,574.27/48,706.70
  6. Step 6: Final answer
    x = 30,955.28

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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.