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Finding the Fourth Proportional to 66,588.90, 91,896.96 and 38,293.98

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Solution

The fourth proportional to 66,588.90, 91,896.96 and 38,293.98 is: 52,848.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,588.90 : 91,896.96 = 38,293.98 : x
  2. Step 2: Convert to fraction form
    66,588.90/91,896.96 = 38,293.98/x
  3. Step 3: Cross multiply
    66,588.90x = 91,896.96 × 38,293.98
  4. Step 4: Simplify right side
    66,588.90x = 3,519,100,348.30
  5. Step 5: Solve for x
    x = 3,519,100,348.30/66,588.90
  6. Step 6: Final answer
    x = 52,848.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.