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Finding the Fourth Proportional to 17,991.74, 24,828.62 and 9,925.21

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Solution

The fourth proportional to 17,991.74, 24,828.62 and 9,925.21 is: 13,696.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,991.74 : 24,828.62 = 9,925.21 : x
  2. Step 2: Convert to fraction form
    17,991.74/24,828.62 = 9,925.21/x
  3. Step 3: Cross multiply
    17,991.74x = 24,828.62 × 9,925.21
  4. Step 4: Simplify right side
    17,991.74x = 246,429,230.25
  5. Step 5: Solve for x
    x = 246,429,230.25/17,991.74
  6. Step 6: Final answer
    x = 13,696.80

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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.