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Finding the Fourth Proportional to 66,464.46, 91,728.84 and 37,788.45

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Solution

The fourth proportional to 66,464.46, 91,728.84 and 37,788.45 is: 52,152.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,464.46 : 91,728.84 = 37,788.45 : x
  2. Step 2: Convert to fraction form
    66,464.46/91,728.84 = 37,788.45/x
  3. Step 3: Cross multiply
    66,464.46x = 91,728.84 × 37,788.45
  4. Step 4: Simplify right side
    66,464.46x = 3,466,290,683.90
  5. Step 5: Solve for x
    x = 3,466,290,683.90/66,464.46
  6. Step 6: Final answer
    x = 52,152.54

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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.