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Finding the Fourth Proportional to 238,842.96, 358,251.48 and 72,618

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Solution

The fourth proportional to 238,842.96, 358,251.48 and 72,618 is: 108,923.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,842.96 : 358,251.48 = 72,618 : x
  2. Step 2: Convert to fraction form
    238,842.96/358,251.48 = 72,618/x
  3. Step 3: Cross multiply
    238,842.96x = 358,251.48 × 72,618
  4. Step 4: Simplify right side
    238,842.96x = 26,015,505,974.64
  5. Step 5: Solve for x
    x = 26,015,505,974.64/238,842.96
  6. Step 6: Final answer
    x = 108,923.06

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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.