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Finding the Fourth Proportional to 526,270.40, 726,246.24 and 287,806.40

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Solution

The fourth proportional to 526,270.40, 726,246.24 and 287,806.40 is: 397,169.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,270.40 : 726,246.24 = 287,806.40 : x
  2. Step 2: Convert to fraction form
    526,270.40/726,246.24 = 287,806.40/x
  3. Step 3: Cross multiply
    526,270.40x = 726,246.24 × 287,806.40
  4. Step 4: Simplify right side
    526,270.40x = 209,018,315,847.94
  5. Step 5: Solve for x
    x = 209,018,315,847.94/526,270.40
  6. Step 6: Final answer
    x = 397,169.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.