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Finding the Fourth Proportional to 35,280.44, 48,691.50 and 20,376.44

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Solution

The fourth proportional to 35,280.44, 48,691.50 and 20,376.44 is: 28,122.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,280.44 : 48,691.50 = 20,376.44 : x
  2. Step 2: Convert to fraction form
    35,280.44/48,691.50 = 20,376.44/x
  3. Step 3: Cross multiply
    35,280.44x = 48,691.50 × 20,376.44
  4. Step 4: Simplify right side
    35,280.44x = 992,159,428.26
  5. Step 5: Solve for x
    x = 992,159,428.26/35,280.44
  6. Step 6: Final answer
    x = 28,122.08

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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.