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Finding the Fourth Proportional to 19,700.96, 27,187.20 and 10,748.28

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Solution

The fourth proportional to 19,700.96, 27,187.20 and 10,748.28 is: 14,832.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,700.96 : 27,187.20 = 10,748.28 : x
  2. Step 2: Convert to fraction form
    19,700.96/27,187.20 = 10,748.28/x
  3. Step 3: Cross multiply
    19,700.96x = 27,187.20 × 10,748.28
  4. Step 4: Simplify right side
    19,700.96x = 292,215,638.02
  5. Step 5: Solve for x
    x = 292,215,638.02/19,700.96
  6. Step 6: Final answer
    x = 14,832.56

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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.