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Finding the Fourth Proportional to 238,949.80, 358,320.54 and 72,698.92

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Solution

The fourth proportional to 238,949.80, 358,320.54 and 72,698.92 is: 109,016.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,949.80 : 358,320.54 = 72,698.92 : x
  2. Step 2: Convert to fraction form
    238,949.80/358,320.54 = 72,698.92/x
  3. Step 3: Cross multiply
    238,949.80x = 358,320.54 × 72,698.92
  4. Step 4: Simplify right side
    238,949.80x = 26,049,516,271.82
  5. Step 5: Solve for x
    x = 26,049,516,271.82/238,949.80
  6. Step 6: Final answer
    x = 109,016.69

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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.