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Finding the Fourth Proportional to 34,786.74, 48,005.70 and 19,679.09

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Solution

The fourth proportional to 34,786.74, 48,005.70 and 19,679.09 is: 27,157.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,786.74 : 48,005.70 = 19,679.09 : x
  2. Step 2: Convert to fraction form
    34,786.74/48,005.70 = 19,679.09/x
  3. Step 3: Cross multiply
    34,786.74x = 48,005.70 × 19,679.09
  4. Step 4: Simplify right side
    34,786.74x = 944,708,490.81
  5. Step 5: Solve for x
    x = 944,708,490.81/34,786.74
  6. Step 6: Final answer
    x = 27,157.14

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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.