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Finding the Fourth Proportional to 66,184.70, 99,291.62 and 21,809.55

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Solution

The fourth proportional to 66,184.70, 99,291.62 and 21,809.55 is: 32,719.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,184.70 : 99,291.62 = 21,809.55 : x
  2. Step 2: Convert to fraction form
    66,184.70/99,291.62 = 21,809.55/x
  3. Step 3: Cross multiply
    66,184.70x = 99,291.62 × 21,809.55
  4. Step 4: Simplify right side
    66,184.70x = 2,165,505,977.84
  5. Step 5: Solve for x
    x = 2,165,505,977.84/66,184.70
  6. Step 6: Final answer
    x = 32,719.14

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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.