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Finding the Fourth Proportional to 373,422.80, 560,069.40 and 136,643.60

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Solution

The fourth proportional to 373,422.80, 560,069.40 and 136,643.60 is: 204,941.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,422.80 : 560,069.40 = 136,643.60 : x
  2. Step 2: Convert to fraction form
    373,422.80/560,069.40 = 136,643.60/x
  3. Step 3: Cross multiply
    373,422.80x = 560,069.40 × 136,643.60
  4. Step 4: Simplify right side
    373,422.80x = 76,529,899,065.84
  5. Step 5: Solve for x
    x = 76,529,899,065.84/373,422.80
  6. Step 6: Final answer
    x = 204,941.69

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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.