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Finding the Fourth Proportional to 11,706.63, 16,155.49 and 6,401.74

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Solution

The fourth proportional to 11,706.63, 16,155.49 and 6,401.74 is: 8,834.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,706.63 : 16,155.49 = 6,401.74 : x
  2. Step 2: Convert to fraction form
    11,706.63/16,155.49 = 6,401.74/x
  3. Step 3: Cross multiply
    11,706.63x = 16,155.49 × 6,401.74
  4. Step 4: Simplify right side
    11,706.63x = 103,423,165.78
  5. Step 5: Solve for x
    x = 103,423,165.78/11,706.63
  6. Step 6: Final answer
    x = 8,834.58

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Double scale
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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.