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Finding the Fourth Proportional to 113,121.70, 169,633.95 and 56,940.10

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Solution

The fourth proportional to 113,121.70, 169,633.95 and 56,940.10 is: 85,385.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,121.70 : 169,633.95 = 56,940.10 : x
  2. Step 2: Convert to fraction form
    113,121.70/169,633.95 = 56,940.10/x
  3. Step 3: Cross multiply
    113,121.70x = 169,633.95 × 56,940.10
  4. Step 4: Simplify right side
    113,121.70x = 9,658,974,076.40
  5. Step 5: Solve for x
    x = 9,658,974,076.40/113,121.70
  6. Step 6: Final answer
    x = 85,385.69

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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.