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Finding the Fourth Proportional to 60,638,715.20, 90,958,072.80 and 60,638,715.20

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Solution

The fourth proportional to 60,638,715.20, 90,958,072.80 and 60,638,715.20 is: 90,958,072.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,638,715.20 : 90,958,072.80 = 60,638,715.20 : x
  2. Step 2: Convert to fraction form
    60,638,715.20/90,958,072.80 = 60,638,715.20/x
  3. Step 3: Cross multiply
    60,638,715.20x = 90,958,072.80 × 60,638,715.20
  4. Step 4: Simplify right side
    60,638,715.20x = 5,515,580,671,660,067
  5. Step 5: Solve for x
    x = 5,515,580,671,660,067/60,638,715.20
  6. Step 6: Final answer
    x = 90,958,072.80

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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.