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Finding the Fourth Proportional to 19,925.84, 29,879.04 and 11,608.76

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Solution

The fourth proportional to 19,925.84, 29,879.04 and 11,608.76 is: 17,407.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,925.84 : 29,879.04 = 11,608.76 : x
  2. Step 2: Convert to fraction form
    19,925.84/29,879.04 = 11,608.76/x
  3. Step 3: Cross multiply
    19,925.84x = 29,879.04 × 11,608.76
  4. Step 4: Simplify right side
    19,925.84x = 346,858,604.39
  5. Step 5: Solve for x
    x = 346,858,604.39/19,925.84
  6. Step 6: Final answer
    x = 17,407.48

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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.