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Finding the Fourth Proportional to 19,693.10, 29,553.28 and 7,845.71

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Solution

The fourth proportional to 19,693.10, 29,553.28 and 7,845.71 is: 11,774.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,693.10 : 29,553.28 = 7,845.71 : x
  2. Step 2: Convert to fraction form
    19,693.10/29,553.28 = 7,845.71/x
  3. Step 3: Cross multiply
    19,693.10x = 29,553.28 × 7,845.71
  4. Step 4: Simplify right side
    19,693.10x = 231,866,485.35
  5. Step 5: Solve for x
    x = 231,866,485.35/19,693.10
  6. Step 6: Final answer
    x = 11,774.00

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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.