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Finding the Fourth Proportional to 43,812.80, 65,719.20 and 35,064.80

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Solution

The fourth proportional to 43,812.80, 65,719.20 and 35,064.80 is: 52,597.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,812.80 : 65,719.20 = 35,064.80 : x
  2. Step 2: Convert to fraction form
    43,812.80/65,719.20 = 35,064.80/x
  3. Step 3: Cross multiply
    43,812.80x = 65,719.20 × 35,064.80
  4. Step 4: Simplify right side
    43,812.80x = 2,304,430,604.16
  5. Step 5: Solve for x
    x = 2,304,430,604.16/43,812.80
  6. Step 6: Final answer
    x = 52,597.20

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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.