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Finding the Fourth Proportional to 45,392.94, 68,089.41 and 12,113.13

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Solution

The fourth proportional to 45,392.94, 68,089.41 and 12,113.13 is: 18,169.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,392.94 : 68,089.41 = 12,113.13 : x
  2. Step 2: Convert to fraction form
    45,392.94/68,089.41 = 12,113.13/x
  3. Step 3: Cross multiply
    45,392.94x = 68,089.41 × 12,113.13
  4. Step 4: Simplify right side
    45,392.94x = 824,775,874.95
  5. Step 5: Solve for x
    x = 824,775,874.95/45,392.94
  6. Step 6: Final answer
    x = 18,169.70

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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.