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Finding the Fourth Proportional to 16,719.80, 25,084.88 and 6,859.84

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Solution

The fourth proportional to 16,719.80, 25,084.88 and 6,859.84 is: 10,291.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,719.80 : 25,084.88 = 6,859.84 : x
  2. Step 2: Convert to fraction form
    16,719.80/25,084.88 = 6,859.84/x
  3. Step 3: Cross multiply
    16,719.80x = 25,084.88 × 6,859.84
  4. Step 4: Simplify right side
    16,719.80x = 172,078,263.22
  5. Step 5: Solve for x
    x = 172,078,263.22/16,719.80
  6. Step 6: Final answer
    x = 10,291.89

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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.