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Finding the Fourth Proportional to 43,155.42, 64,728.42 and 11,568.58

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Solution

The fourth proportional to 43,155.42, 64,728.42 and 11,568.58 is: 17,351.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,155.42 : 64,728.42 = 11,568.58 : x
  2. Step 2: Convert to fraction form
    43,155.42/64,728.42 = 11,568.58/x
  3. Step 3: Cross multiply
    43,155.42x = 64,728.42 × 11,568.58
  4. Step 4: Simplify right side
    43,155.42x = 748,815,905.04
  5. Step 5: Solve for x
    x = 748,815,905.04/43,155.42
  6. Step 6: Final answer
    x = 17,351.61

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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.