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Finding the Fourth Proportional to 66,396.99, 91,627.86 and 36,182.31

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Solution

The fourth proportional to 66,396.99, 91,627.86 and 36,182.31 is: 49,931.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,396.99 : 91,627.86 = 36,182.31 : x
  2. Step 2: Convert to fraction form
    66,396.99/91,627.86 = 36,182.31/x
  3. Step 3: Cross multiply
    66,396.99x = 91,627.86 × 36,182.31
  4. Step 4: Simplify right side
    66,396.99x = 3,315,307,155.87
  5. Step 5: Solve for x
    x = 3,315,307,155.87/66,396.99
  6. Step 6: Final answer
    x = 49,931.59

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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.