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Finding the Fourth Proportional to 18,905.64, 28,358.70 and 6,593.64

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Solution

The fourth proportional to 18,905.64, 28,358.70 and 6,593.64 is: 9,890.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.64 : 28,358.70 = 6,593.64 : x
  2. Step 2: Convert to fraction form
    18,905.64/28,358.70 = 6,593.64/x
  3. Step 3: Cross multiply
    18,905.64x = 28,358.70 × 6,593.64
  4. Step 4: Simplify right side
    18,905.64x = 186,987,058.67
  5. Step 5: Solve for x
    x = 186,987,058.67/18,905.64
  6. Step 6: Final answer
    x = 9,890.54

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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.