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Finding the Fourth Proportional to 18,774.98, 25,885.95 and 12,048.74

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Solution

The fourth proportional to 18,774.98, 25,885.95 and 12,048.74 is: 16,612.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774.98 : 25,885.95 = 12,048.74 : x
  2. Step 2: Convert to fraction form
    18,774.98/25,885.95 = 12,048.74/x
  3. Step 3: Cross multiply
    18,774.98x = 25,885.95 × 12,048.74
  4. Step 4: Simplify right side
    18,774.98x = 311,893,081.20
  5. Step 5: Solve for x
    x = 311,893,081.20/18,774.98
  6. Step 6: Final answer
    x = 16,612.17

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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.