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Finding the Fourth Proportional to 28,355.52, 42,522.24 and 11,718.24

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Solution

The fourth proportional to 28,355.52, 42,522.24 and 11,718.24 is: 17,572.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355.52 : 42,522.24 = 11,718.24 : x
  2. Step 2: Convert to fraction form
    28,355.52/42,522.24 = 11,718.24/x
  3. Step 3: Cross multiply
    28,355.52x = 42,522.24 × 11,718.24
  4. Step 4: Simplify right side
    28,355.52x = 498,285,813.66
  5. Step 5: Solve for x
    x = 498,285,813.66/28,355.52
  6. Step 6: Final answer
    x = 17,572.80

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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.