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Finding the Fourth Proportional to 7,338,936.60, 11,008,404.90 and 7,181,472.60

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Solution

The fourth proportional to 7,338,936.60, 11,008,404.90 and 7,181,472.60 is: 10,772,208.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,338,936.60 : 11,008,404.90 = 7,181,472.60 : x
  2. Step 2: Convert to fraction form
    7,338,936.60/11,008,404.90 = 7,181,472.60/x
  3. Step 3: Cross multiply
    7,338,936.60x = 11,008,404.90 × 7,181,472.60
  4. Step 4: Simplify right side
    7,338,936.60x = 79,056,558,159,055.73
  5. Step 5: Solve for x
    x = 79,056,558,159,055.73/7,338,936.60
  6. Step 6: Final answer
    x = 10,772,208.90

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Similar ratio
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1.5x scale

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.