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Finding the Fourth Proportional to 361,603.20, 543,571.20 and 257,145.60

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Solution

The fourth proportional to 361,603.20, 543,571.20 and 257,145.60 is: 386,547.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,603.20 : 543,571.20 = 257,145.60 : x
  2. Step 2: Convert to fraction form
    361,603.20/543,571.20 = 257,145.60/x
  3. Step 3: Cross multiply
    361,603.20x = 543,571.20 × 257,145.60
  4. Step 4: Simplify right side
    361,603.20x = 139,776,942,366.72
  5. Step 5: Solve for x
    x = 139,776,942,366.72/361,603.20
  6. Step 6: Final answer
    x = 386,547.86

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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.