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Finding the Fourth Proportional to 18,895.87, 28,349.95 and 9,035.88

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Solution

The fourth proportional to 18,895.87, 28,349.95 and 9,035.88 is: 13,556.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,895.87 : 28,349.95 = 9,035.88 : x
  2. Step 2: Convert to fraction form
    18,895.87/28,349.95 = 9,035.88/x
  3. Step 3: Cross multiply
    18,895.87x = 28,349.95 × 9,035.88
  4. Step 4: Simplify right side
    18,895.87x = 256,166,746.21
  5. Step 5: Solve for x
    x = 256,166,746.21/18,895.87
  6. Step 6: Final answer
    x = 13,556.76

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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.