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Finding the Fourth Proportional to 35,687.60, 49,262.80 and 20,593.20

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Solution

The fourth proportional to 35,687.60, 49,262.80 and 20,593.20 is: 28,426.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,687.60 : 49,262.80 = 20,593.20 : x
  2. Step 2: Convert to fraction form
    35,687.60/49,262.80 = 20,593.20/x
  3. Step 3: Cross multiply
    35,687.60x = 49,262.80 × 20,593.20
  4. Step 4: Simplify right side
    35,687.60x = 1,014,478,864.82
  5. Step 5: Solve for x
    x = 1,014,478,864.82/35,687.60
  6. Step 6: Final answer
    x = 28,426.65

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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.