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Finding the Fourth Proportional to 262,851.20, 393,931.20 and 233,129.60

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Solution

The fourth proportional to 262,851.20, 393,931.20 and 233,129.60 is: 349,387.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,851.20 : 393,931.20 = 233,129.60 : x
  2. Step 2: Convert to fraction form
    262,851.20/393,931.20 = 233,129.60/x
  3. Step 3: Cross multiply
    262,851.20x = 393,931.20 × 233,129.60
  4. Step 4: Simplify right side
    262,851.20x = 91,837,023,083.52
  5. Step 5: Solve for x
    x = 91,837,023,083.52/262,851.20
  6. Step 6: Final answer
    x = 349,387.88

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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.