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Finding the Fourth Proportional to 86,010,624.60, 129,015,936.90 and 86,010,624.60

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Solution

The fourth proportional to 86,010,624.60, 129,015,936.90 and 86,010,624.60 is: 129,015,936.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,010,624.60 : 129,015,936.90 = 86,010,624.60 : x
  2. Step 2: Convert to fraction form
    86,010,624.60/129,015,936.90 = 86,010,624.60/x
  3. Step 3: Cross multiply
    86,010,624.60x = 129,015,936.90 × 86,010,624.60
  4. Step 4: Simplify right side
    86,010,624.60x = 11,096,741,316,123,188
  5. Step 5: Solve for x
    x = 11,096,741,316,123,188/86,010,624.60
  6. Step 6: Final answer
    x = 129,015,936.90

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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.