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Finding the Fourth Proportional to 66,693.85, 92,040.47 and 38,408.65

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Solution

The fourth proportional to 66,693.85, 92,040.47 and 38,408.65 is: 53,005.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,693.85 : 92,040.47 = 38,408.65 : x
  2. Step 2: Convert to fraction form
    66,693.85/92,040.47 = 38,408.65/x
  3. Step 3: Cross multiply
    66,693.85x = 92,040.47 × 38,408.65
  4. Step 4: Simplify right side
    66,693.85x = 3,535,150,121.07
  5. Step 5: Solve for x
    x = 3,535,150,121.07/66,693.85
  6. Step 6: Final answer
    x = 53,005.64

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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.