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Finding the Fourth Proportional to 99,593.20, 149,417.48 and 43,438.20

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Solution

The fourth proportional to 99,593.20, 149,417.48 and 43,438.20 is: 65,169.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,593.20 : 149,417.48 = 43,438.20 : x
  2. Step 2: Convert to fraction form
    99,593.20/149,417.48 = 43,438.20/x
  3. Step 3: Cross multiply
    99,593.20x = 149,417.48 × 43,438.20
  4. Step 4: Simplify right side
    99,593.20x = 6,490,426,379.74
  5. Step 5: Solve for x
    x = 6,490,426,379.74/99,593.20
  6. Step 6: Final answer
    x = 65,169.37

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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.