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Finding the Fourth Proportional to 31,212,902.90, 43,727,923.90 and 31,212,902.90

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Solution

The fourth proportional to 31,212,902.90, 43,727,923.90 and 31,212,902.90 is: 43,727,923.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,212,902.90 : 43,727,923.90 = 31,212,902.90 : x
  2. Step 2: Convert to fraction form
    31,212,902.90/43,727,923.90 = 31,212,902.90/x
  3. Step 3: Cross multiply
    31,212,902.90x = 43,727,923.90 × 31,212,902.90
  4. Step 4: Simplify right side
    31,212,902.90x = 1,364,875,442,709,289.25
  5. Step 5: Solve for x
    x = 1,364,875,442,709,289.25/31,212,902.90
  6. Step 6: Final answer
    x = 43,727,923.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.