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Finding the Fourth Proportional to 18,794.58, 25,925.13 and 12,421.23

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Solution

The fourth proportional to 18,794.58, 25,925.13 and 12,421.23 is: 17,133.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,794.58 : 25,925.13 = 12,421.23 : x
  2. Step 2: Convert to fraction form
    18,794.58/25,925.13 = 12,421.23/x
  3. Step 3: Cross multiply
    18,794.58x = 25,925.13 × 12,421.23
  4. Step 4: Simplify right side
    18,794.58x = 322,022,002.51
  5. Step 5: Solve for x
    x = 322,022,002.51/18,794.58
  6. Step 6: Final answer
    x = 17,133.77

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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.