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Finding the Fourth Proportional to 35,644.44, 53,448.66 and 20,857.80

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Solution

The fourth proportional to 35,644.44, 53,448.66 and 20,857.80 is: 31,276.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,644.44 : 53,448.66 = 20,857.80 : x
  2. Step 2: Convert to fraction form
    35,644.44/53,448.66 = 20,857.80/x
  3. Step 3: Cross multiply
    35,644.44x = 53,448.66 × 20,857.80
  4. Step 4: Simplify right side
    35,644.44x = 1,114,821,460.55
  5. Step 5: Solve for x
    x = 1,114,821,460.55/35,644.44
  6. Step 6: Final answer
    x = 31,276.17

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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.