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Finding the Fourth Proportional to 238,890.96, 358,389.72 and 72,691.92

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Solution

The fourth proportional to 238,890.96, 358,389.72 and 72,691.92 is: 109,054.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,890.96 : 358,389.72 = 72,691.92 : x
  2. Step 2: Convert to fraction form
    238,890.96/358,389.72 = 72,691.92/x
  3. Step 3: Cross multiply
    238,890.96x = 358,389.72 × 72,691.92
  4. Step 4: Simplify right side
    238,890.96x = 26,052,036,855.06
  5. Step 5: Solve for x
    x = 26,052,036,855.06/238,890.96
  6. Step 6: Final answer
    x = 109,054.09

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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.