Home / 66,144.30-99,208.70-18,763.55

Finding the Fourth Proportional to 66,144.30, 99,208.70 and 18,763.55

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Solution

The fourth proportional to 66,144.30, 99,208.70 and 18,763.55 is: 28,143.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,144.30 : 99,208.70 = 18,763.55 : x
  2. Step 2: Convert to fraction form
    66,144.30/99,208.70 = 18,763.55/x
  3. Step 3: Cross multiply
    66,144.30x = 99,208.70 × 18,763.55
  4. Step 4: Simplify right side
    66,144.30x = 1,861,507,255.42
  5. Step 5: Solve for x
    x = 1,861,507,255.42/66,144.30
  6. Step 6: Final answer
    x = 28,143.13

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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.