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Finding the Fourth Proportional to 221,910.53, 306,235.80 and 119,935.67

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Solution

The fourth proportional to 221,910.53, 306,235.80 and 119,935.67 is: 165,510.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,910.53 : 306,235.80 = 119,935.67 : x
  2. Step 2: Convert to fraction form
    221,910.53/306,235.80 = 119,935.67/x
  3. Step 3: Cross multiply
    221,910.53x = 306,235.80 × 119,935.67
  4. Step 4: Simplify right side
    221,910.53x = 36,728,594,319.81
  5. Step 5: Solve for x
    x = 36,728,594,319.81/221,910.53
  6. Step 6: Final answer
    x = 165,510.83

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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.