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Finding the Fourth Proportional to 28,223.34, 42,354.44 and 9,755.34

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Solution

The fourth proportional to 28,223.34, 42,354.44 and 9,755.34 is: 14,639.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,223.34 : 42,354.44 = 9,755.34 : x
  2. Step 2: Convert to fraction form
    28,223.34/42,354.44 = 9,755.34/x
  3. Step 3: Cross multiply
    28,223.34x = 42,354.44 × 9,755.34
  4. Step 4: Simplify right side
    28,223.34x = 413,181,775.33
  5. Step 5: Solve for x
    x = 413,181,775.33/28,223.34
  6. Step 6: Final answer
    x = 14,639.72

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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.