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Finding the Fourth Proportional to 66,331.78, 99,497.67 and 21,946.62

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Solution

The fourth proportional to 66,331.78, 99,497.67 and 21,946.62 is: 32,919.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,331.78 : 99,497.67 = 21,946.62 : x
  2. Step 2: Convert to fraction form
    66,331.78/99,497.67 = 21,946.62/x
  3. Step 3: Cross multiply
    66,331.78x = 99,497.67 × 21,946.62
  4. Step 4: Simplify right side
    66,331.78x = 2,183,637,554.38
  5. Step 5: Solve for x
    x = 2,183,637,554.38/66,331.78
  6. Step 6: Final answer
    x = 32,919.93

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1.5x scale

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.