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Finding the Fourth Proportional to 48,899.80, 73,349.70 and 11,963.80

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Solution

The fourth proportional to 48,899.80, 73,349.70 and 11,963.80 is: 17,945.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,899.80 : 73,349.70 = 11,963.80 : x
  2. Step 2: Convert to fraction form
    48,899.80/73,349.70 = 11,963.80/x
  3. Step 3: Cross multiply
    48,899.80x = 73,349.70 × 11,963.80
  4. Step 4: Simplify right side
    48,899.80x = 877,541,140.86
  5. Step 5: Solve for x
    x = 877,541,140.86/48,899.80
  6. Step 6: Final answer
    x = 17,945.70

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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.