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Finding the Fourth Proportional to 15,753.99, 21,740.52 and 8,583.87

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Solution

The fourth proportional to 15,753.99, 21,740.52 and 8,583.87 is: 11,845.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,753.99 : 21,740.52 = 8,583.87 : x
  2. Step 2: Convert to fraction form
    15,753.99/21,740.52 = 8,583.87/x
  3. Step 3: Cross multiply
    15,753.99x = 21,740.52 × 8,583.87
  4. Step 4: Simplify right side
    15,753.99x = 186,617,754.49
  5. Step 5: Solve for x
    x = 186,617,754.49/15,753.99
  6. Step 6: Final answer
    x = 11,845.75

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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.