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Finding the Fourth Proportional to 268,847.16, 370,965.68 and 154,104.69

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Solution

The fourth proportional to 268,847.16, 370,965.68 and 154,104.69 is: 212,639.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,847.16 : 370,965.68 = 154,104.69 : x
  2. Step 2: Convert to fraction form
    268,847.16/370,965.68 = 154,104.69/x
  3. Step 3: Cross multiply
    268,847.16x = 370,965.68 × 154,104.69
  4. Step 4: Simplify right side
    268,847.16x = 57,167,550,346.52
  5. Step 5: Solve for x
    x = 57,167,550,346.52/268,847.16
  6. Step 6: Final answer
    x = 212,639.59

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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.