Home / 66,453.20-99,697.40-28,997.20

Finding the Fourth Proportional to 66,453.20, 99,697.40 and 28,997.20

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Solution

The fourth proportional to 66,453.20, 99,697.40 and 28,997.20 is: 43,503.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,453.20 : 99,697.40 = 28,997.20 : x
  2. Step 2: Convert to fraction form
    66,453.20/99,697.40 = 28,997.20/x
  3. Step 3: Cross multiply
    66,453.20x = 99,697.40 × 28,997.20
  4. Step 4: Simplify right side
    66,453.20x = 2,890,945,447.28
  5. Step 5: Solve for x
    x = 2,890,945,447.28/66,453.20
  6. Step 6: Final answer
    x = 43,503.48

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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.