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Finding the Fourth Proportional to 35,476.38, 48,952.80 and 20,369.70

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Solution

The fourth proportional to 35,476.38, 48,952.80 and 20,369.70 is: 28,107.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,476.38 : 48,952.80 = 20,369.70 : x
  2. Step 2: Convert to fraction form
    35,476.38/48,952.80 = 20,369.70/x
  3. Step 3: Cross multiply
    35,476.38x = 48,952.80 × 20,369.70
  4. Step 4: Simplify right side
    35,476.38x = 997,153,850.16
  5. Step 5: Solve for x
    x = 997,153,850.16/35,476.38
  6. Step 6: Final answer
    x = 28,107.54

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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.