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Finding the Fourth Proportional to 99,628.88, 149,404.44 and 43,486.16

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Solution

The fourth proportional to 99,628.88, 149,404.44 and 43,486.16 is: 65,212.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,628.88 : 149,404.44 = 43,486.16 : x
  2. Step 2: Convert to fraction form
    99,628.88/149,404.44 = 43,486.16/x
  3. Step 3: Cross multiply
    99,628.88x = 149,404.44 × 43,486.16
  4. Step 4: Simplify right side
    99,628.88x = 6,497,025,382.55
  5. Step 5: Solve for x
    x = 6,497,025,382.55/99,628.88
  6. Step 6: Final answer
    x = 65,212.27

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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.