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Finding the Fourth Proportional to 35,389.94, 48,835.41 and 20,282.42

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Solution

The fourth proportional to 35,389.94, 48,835.41 and 20,282.42 is: 27,988.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,389.94 : 48,835.41 = 20,282.42 : x
  2. Step 2: Convert to fraction form
    35,389.94/48,835.41 = 20,282.42/x
  3. Step 3: Cross multiply
    35,389.94x = 48,835.41 × 20,282.42
  4. Step 4: Simplify right side
    35,389.94x = 990,500,296.49
  5. Step 5: Solve for x
    x = 990,500,296.49/35,389.94
  6. Step 6: Final answer
    x = 27,988.19

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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.