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Finding the Fourth Proportional to 47,872,816.20, 71,809,224.30 and 47,872,816.20

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Solution

The fourth proportional to 47,872,816.20, 71,809,224.30 and 47,872,816.20 is: 71,809,224.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,872,816.20 : 71,809,224.30 = 47,872,816.20 : x
  2. Step 2: Convert to fraction form
    47,872,816.20/71,809,224.30 = 47,872,816.20/x
  3. Step 3: Cross multiply
    47,872,816.20x = 71,809,224.30 × 47,872,816.20
  4. Step 4: Simplify right side
    47,872,816.20x = 3,437,709,796,378,473.50
  5. Step 5: Solve for x
    x = 3,437,709,796,378,473.50/47,872,816.20
  6. Step 6: Final answer
    x = 71,809,224.30

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Double scale
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Similar ratio
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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.