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Finding the Fourth Proportional to 19,676.48, 29,437.92 and 12,536.48

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Solution

The fourth proportional to 19,676.48, 29,437.92 and 12,536.48 is: 18,755.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,676.48 : 29,437.92 = 12,536.48 : x
  2. Step 2: Convert to fraction form
    19,676.48/29,437.92 = 12,536.48/x
  3. Step 3: Cross multiply
    19,676.48x = 29,437.92 × 12,536.48
  4. Step 4: Simplify right side
    19,676.48x = 369,047,895.32
  5. Step 5: Solve for x
    x = 369,047,895.32/19,676.48
  6. Step 6: Final answer
    x = 18,755.79

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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.