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Finding the Fourth Proportional to 262,571.60, 393,857.40 and 129,515.60

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Solution

The fourth proportional to 262,571.60, 393,857.40 and 129,515.60 is: 194,273.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,571.60 : 393,857.40 = 129,515.60 : x
  2. Step 2: Convert to fraction form
    262,571.60/393,857.40 = 129,515.60/x
  3. Step 3: Cross multiply
    262,571.60x = 393,857.40 × 129,515.60
  4. Step 4: Simplify right side
    262,571.60x = 51,010,677,475.44
  5. Step 5: Solve for x
    x = 51,010,677,475.44/262,571.60
  6. Step 6: Final answer
    x = 194,273.40

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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.