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Finding the Fourth Proportional to 262,354.40, 394,406.40 and 223,863.20

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Solution

The fourth proportional to 262,354.40, 394,406.40 and 223,863.20 is: 336,541.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,354.40 : 394,406.40 = 223,863.20 : x
  2. Step 2: Convert to fraction form
    262,354.40/394,406.40 = 223,863.20/x
  3. Step 3: Cross multiply
    262,354.40x = 394,406.40 × 223,863.20
  4. Step 4: Simplify right side
    262,354.40x = 88,293,078,804.48
  5. Step 5: Solve for x
    x = 88,293,078,804.48/262,354.40
  6. Step 6: Final answer
    x = 336,541.25

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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.