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Finding the Fourth Proportional to 18,805.76, 28,186.76 and 18,597.99

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Solution

The fourth proportional to 18,805.76, 28,186.76 and 18,597.99 is: 27,875.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.76 : 28,186.76 = 18,597.99 : x
  2. Step 2: Convert to fraction form
    18,805.76/28,186.76 = 18,597.99/x
  3. Step 3: Cross multiply
    18,805.76x = 28,186.76 × 18,597.99
  4. Step 4: Simplify right side
    18,805.76x = 524,216,987.62
  5. Step 5: Solve for x
    x = 524,216,987.62/18,805.76
  6. Step 6: Final answer
    x = 27,875.35

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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.