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Finding the Fourth Proportional to 48,839.60, 73,259.40 and 42,813.20

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Solution

The fourth proportional to 48,839.60, 73,259.40 and 42,813.20 is: 64,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,839.60 : 73,259.40 = 42,813.20 : x
  2. Step 2: Convert to fraction form
    48,839.60/73,259.40 = 42,813.20/x
  3. Step 3: Cross multiply
    48,839.60x = 73,259.40 × 42,813.20
  4. Step 4: Simplify right side
    48,839.60x = 3,136,469,344.08
  5. Step 5: Solve for x
    x = 3,136,469,344.08/48,839.60
  6. Step 6: Final answer
    x = 64,219.80

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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.