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Finding the Fourth Proportional to 201,941.61, 278,678.27 and 111,297.65

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Solution

The fourth proportional to 201,941.61, 278,678.27 and 111,297.65 is: 153,590.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,941.61 : 278,678.27 = 111,297.65 : x
  2. Step 2: Convert to fraction form
    201,941.61/278,678.27 = 111,297.65/x
  3. Step 3: Cross multiply
    201,941.61x = 278,678.27 × 111,297.65
  4. Step 4: Simplify right side
    201,941.61x = 31,016,235,441.92
  5. Step 5: Solve for x
    x = 31,016,235,441.92/201,941.61
  6. Step 6: Final answer
    x = 153,590.12

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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.