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Finding the Fourth Proportional to 35,874.80, 53,812.20 and 31,497.20

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Solution

The fourth proportional to 35,874.80, 53,812.20 and 31,497.20 is: 47,245.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,874.80 : 53,812.20 = 31,497.20 : x
  2. Step 2: Convert to fraction form
    35,874.80/53,812.20 = 31,497.20/x
  3. Step 3: Cross multiply
    35,874.80x = 53,812.20 × 31,497.20
  4. Step 4: Simplify right side
    35,874.80x = 1,694,933,625.84
  5. Step 5: Solve for x
    x = 1,694,933,625.84/35,874.80
  6. Step 6: Final answer
    x = 47,245.80

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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.