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Finding the Fourth Proportional to 89,653.53, 134,449.20 and 39,768.60

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Solution

The fourth proportional to 89,653.53, 134,449.20 and 39,768.60 is: 59,639.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,653.53 : 134,449.20 = 39,768.60 : x
  2. Step 2: Convert to fraction form
    89,653.53/134,449.20 = 39,768.60/x
  3. Step 3: Cross multiply
    89,653.53x = 134,449.20 × 39,768.60
  4. Step 4: Simplify right side
    89,653.53x = 5,346,856,455.12
  5. Step 5: Solve for x
    x = 5,346,856,455.12/89,653.53
  6. Step 6: Final answer
    x = 59,639.11

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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.