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Finding the Fourth Proportional to 20,007,033.70, 28,085,429.90 and 20,007,033.70

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Solution

The fourth proportional to 20,007,033.70, 28,085,429.90 and 20,007,033.70 is: 28,085,429.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,007,033.70 : 28,085,429.90 = 20,007,033.70 : x
  2. Step 2: Convert to fraction form
    20,007,033.70/28,085,429.90 = 20,007,033.70/x
  3. Step 3: Cross multiply
    20,007,033.70x = 28,085,429.90 × 20,007,033.70
  4. Step 4: Simplify right side
    20,007,033.70x = 561,906,142,488,287.56
  5. Step 5: Solve for x
    x = 561,906,142,488,287.56/20,007,033.70
  6. Step 6: Final answer
    x = 28,085,429.90

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1.5x scale

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.