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Finding the Fourth Proportional to 99,909.99, 149,861.50 and 25,030.78

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Solution

The fourth proportional to 99,909.99, 149,861.50 and 25,030.78 is: 37,545.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,909.99 : 149,861.50 = 25,030.78 : x
  2. Step 2: Convert to fraction form
    99,909.99/149,861.50 = 25,030.78/x
  3. Step 3: Cross multiply
    99,909.99x = 149,861.50 × 25,030.78
  4. Step 4: Simplify right side
    99,909.99x = 3,751,150,236.97
  5. Step 5: Solve for x
    x = 3,751,150,236.97/99,909.99
  6. Step 6: Final answer
    x = 37,545.30

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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.