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Finding the Fourth Proportional to 28,608.55, 42,919.01 and 11,741.60

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Solution

The fourth proportional to 28,608.55, 42,919.01 and 11,741.60 is: 17,614.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,608.55 : 42,919.01 = 11,741.60 : x
  2. Step 2: Convert to fraction form
    28,608.55/42,919.01 = 11,741.60/x
  3. Step 3: Cross multiply
    28,608.55x = 42,919.01 × 11,741.60
  4. Step 4: Simplify right side
    28,608.55x = 503,937,847.82
  5. Step 5: Solve for x
    x = 503,937,847.82/28,608.55
  6. Step 6: Final answer
    x = 17,614.94

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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.