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Finding the Fourth Proportional to 72,536.16, 100,074.24 and 47,400.24

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Solution

The fourth proportional to 72,536.16, 100,074.24 and 47,400.24 is: 65,395.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,536.16 : 100,074.24 = 47,400.24 : x
  2. Step 2: Convert to fraction form
    72,536.16/100,074.24 = 47,400.24/x
  3. Step 3: Cross multiply
    72,536.16x = 100,074.24 × 47,400.24
  4. Step 4: Simplify right side
    72,536.16x = 4,743,542,993.82
  5. Step 5: Solve for x
    x = 4,743,542,993.82/72,536.16
  6. Step 6: Final answer
    x = 65,395.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.