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Finding the Fourth Proportional to 66,368,001.70, 99,552,002.55 and 52,931,073.70

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Solution

The fourth proportional to 66,368,001.70, 99,552,002.55 and 52,931,073.70 is: 79,396,610.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,368,001.70 : 99,552,002.55 = 52,931,073.70 : x
  2. Step 2: Convert to fraction form
    66,368,001.70/99,552,002.55 = 52,931,073.70/x
  3. Step 3: Cross multiply
    66,368,001.70x = 99,552,002.55 × 52,931,073.70
  4. Step 4: Simplify right side
    66,368,001.70x = 5,269,394,383,956,638
  5. Step 5: Solve for x
    x = 5,269,394,383,956,638/66,368,001.70
  6. Step 6: Final answer
    x = 79,396,610.55

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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.