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Finding the Fourth Proportional to 66,115, 99,172.50 and 62,792.92

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Solution

The fourth proportional to 66,115, 99,172.50 and 62,792.92 is: 94,189.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,115 : 99,172.50 = 62,792.92 : x
  2. Step 2: Convert to fraction form
    66,115/99,172.50 = 62,792.92/x
  3. Step 3: Cross multiply
    66,115x = 99,172.50 × 62,792.92
  4. Step 4: Simplify right side
    66,115x = 6,227,330,858.70
  5. Step 5: Solve for x
    x = 6,227,330,858.70/66,115
  6. Step 6: Final answer
    x = 94,189.38

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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.