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Finding the Fourth Proportional to 261,940.60, 393,083.70 and 95,728.60

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Solution

The fourth proportional to 261,940.60, 393,083.70 and 95,728.60 is: 143,656.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,940.60 : 393,083.70 = 95,728.60 : x
  2. Step 2: Convert to fraction form
    261,940.60/393,083.70 = 95,728.60/x
  3. Step 3: Cross multiply
    261,940.60x = 393,083.70 × 95,728.60
  4. Step 4: Simplify right side
    261,940.60x = 37,629,352,283.82
  5. Step 5: Solve for x
    x = 37,629,352,283.82/261,940.60
  6. Step 6: Final answer
    x = 143,656.05

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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.