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Finding the Fourth Proportional to 31,361,989.70, 47,042,984.55 and 31,361,989.70

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Solution

The fourth proportional to 31,361,989.70, 47,042,984.55 and 31,361,989.70 is: 47,042,984.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,361,989.70 : 47,042,984.55 = 31,361,989.70 : x
  2. Step 2: Convert to fraction form
    31,361,989.70/47,042,984.55 = 31,361,989.70/x
  3. Step 3: Cross multiply
    31,361,989.70x = 47,042,984.55 × 31,361,989.70
  4. Step 4: Simplify right side
    31,361,989.70x = 1,475,361,596,914,359
  5. Step 5: Solve for x
    x = 1,475,361,596,914,359/31,361,989.70
  6. Step 6: Final answer
    x = 47,042,984.55

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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.