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Finding the Fourth Proportional to 66,321.52, 99,419.75 and 33,010.09

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Solution

The fourth proportional to 66,321.52, 99,419.75 and 33,010.09 is: 49,484.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,321.52 : 99,419.75 = 33,010.09 : x
  2. Step 2: Convert to fraction form
    66,321.52/99,419.75 = 33,010.09/x
  3. Step 3: Cross multiply
    66,321.52x = 99,419.75 × 33,010.09
  4. Step 4: Simplify right side
    66,321.52x = 3,281,854,895.28
  5. Step 5: Solve for x
    x = 3,281,854,895.28/66,321.52
  6. Step 6: Final answer
    x = 49,484.01

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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.