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Finding the Fourth Proportional to 18,892.98, 28,329.70 and 5,564.24

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Solution

The fourth proportional to 18,892.98, 28,329.70 and 5,564.24 is: 8,343.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,892.98 : 28,329.70 = 5,564.24 : x
  2. Step 2: Convert to fraction form
    18,892.98/28,329.70 = 5,564.24/x
  3. Step 3: Cross multiply
    18,892.98x = 28,329.70 × 5,564.24
  4. Step 4: Simplify right side
    18,892.98x = 157,633,222.11
  5. Step 5: Solve for x
    x = 157,633,222.11/18,892.98
  6. Step 6: Final answer
    x = 8,343.48

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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.