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Finding the Fourth Proportional to 8,685.98, 11,986.47 and 4,706.94

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Solution

The fourth proportional to 8,685.98, 11,986.47 and 4,706.94 is: 6,495.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.98 : 11,986.47 = 4,706.94 : x
  2. Step 2: Convert to fraction form
    8,685.98/11,986.47 = 4,706.94/x
  3. Step 3: Cross multiply
    8,685.98x = 11,986.47 × 4,706.94
  4. Step 4: Simplify right side
    8,685.98x = 56,419,595.10
  5. Step 5: Solve for x
    x = 56,419,595.10/8,685.98
  6. Step 6: Final answer
    x = 6,495.48

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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.