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Finding the Fourth Proportional to 18,755.88, 25,870.92 and 12,030.86

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Solution

The fourth proportional to 18,755.88, 25,870.92 and 12,030.86 is: 16,594.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,755.88 : 25,870.92 = 12,030.86 : x
  2. Step 2: Convert to fraction form
    18,755.88/25,870.92 = 12,030.86/x
  3. Step 3: Cross multiply
    18,755.88x = 25,870.92 × 12,030.86
  4. Step 4: Simplify right side
    18,755.88x = 311,249,416.59
  5. Step 5: Solve for x
    x = 311,249,416.59/18,755.88
  6. Step 6: Final answer
    x = 16,594.76

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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.