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Finding the Fourth Proportional to 19,808.22, 27,335.22 and 10,855.80

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Solution

The fourth proportional to 19,808.22, 27,335.22 and 10,855.80 is: 14,980.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,808.22 : 27,335.22 = 10,855.80 : x
  2. Step 2: Convert to fraction form
    19,808.22/27,335.22 = 10,855.80/x
  3. Step 3: Cross multiply
    19,808.22x = 27,335.22 × 10,855.80
  4. Step 4: Simplify right side
    19,808.22x = 296,745,681.28
  5. Step 5: Solve for x
    x = 296,745,681.28/19,808.22
  6. Step 6: Final answer
    x = 14,980.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.