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Finding the Fourth Proportional to 49,090.80, 73,636.20 and 28,009.20

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Solution

The fourth proportional to 49,090.80, 73,636.20 and 28,009.20 is: 42,013.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,090.80 : 73,636.20 = 28,009.20 : x
  2. Step 2: Convert to fraction form
    49,090.80/73,636.20 = 28,009.20/x
  3. Step 3: Cross multiply
    49,090.80x = 73,636.20 × 28,009.20
  4. Step 4: Simplify right side
    49,090.80x = 2,062,491,053.04
  5. Step 5: Solve for x
    x = 2,062,491,053.04/49,090.80
  6. Step 6: Final answer
    x = 42,013.80

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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.