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Finding the Fourth Proportional to 99,384.80, 149,084.40 and 59,856.80

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Solution

The fourth proportional to 99,384.80, 149,084.40 and 59,856.80 is: 89,789.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,384.80 : 149,084.40 = 59,856.80 : x
  2. Step 2: Convert to fraction form
    99,384.80/149,084.40 = 59,856.80/x
  3. Step 3: Cross multiply
    99,384.80x = 149,084.40 × 59,856.80
  4. Step 4: Simplify right side
    99,384.80x = 8,923,715,113.92
  5. Step 5: Solve for x
    x = 8,923,715,113.92/99,384.80
  6. Step 6: Final answer
    x = 89,789.54

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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.