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Finding the Fourth Proportional to 64,647.12, 96,981.62 and 33,070.89

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Solution

The fourth proportional to 64,647.12, 96,981.62 and 33,070.89 is: 49,611.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,647.12 : 96,981.62 = 33,070.89 : x
  2. Step 2: Convert to fraction form
    64,647.12/96,981.62 = 33,070.89/x
  3. Step 3: Cross multiply
    64,647.12x = 96,981.62 × 33,070.89
  4. Step 4: Simplify right side
    64,647.12x = 3,207,268,321.69
  5. Step 5: Solve for x
    x = 3,207,268,321.69/64,647.12
  6. Step 6: Final answer
    x = 49,611.93

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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.