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Finding the Fourth Proportional to 66,206.70, 99,310.65 and 47,150.94

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Solution

The fourth proportional to 66,206.70, 99,310.65 and 47,150.94 is: 70,726.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,206.70 : 99,310.65 = 47,150.94 : x
  2. Step 2: Convert to fraction form
    66,206.70/99,310.65 = 47,150.94/x
  3. Step 3: Cross multiply
    66,206.70x = 99,310.65 × 47,150.94
  4. Step 4: Simplify right side
    66,206.70x = 4,682,590,499.51
  5. Step 5: Solve for x
    x = 4,682,590,499.51/66,206.70
  6. Step 6: Final answer
    x = 70,726.84

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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.