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Finding the Fourth Proportional to 239,121.62, 358,597.78 and 70,596.87

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Solution

The fourth proportional to 239,121.62, 358,597.78 and 70,596.87 is: 105,870.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,121.62 : 358,597.78 = 70,596.87 : x
  2. Step 2: Convert to fraction form
    239,121.62/358,597.78 = 70,596.87/x
  3. Step 3: Cross multiply
    239,121.62x = 358,597.78 × 70,596.87
  4. Step 4: Simplify right side
    239,121.62x = 25,315,879,732.82
  5. Step 5: Solve for x
    x = 25,315,879,732.82/239,121.62
  6. Step 6: Final answer
    x = 105,870.31

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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.