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Finding the Fourth Proportional to 8,663.67, 11,955.81 and 4,684.74

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Solution

The fourth proportional to 8,663.67, 11,955.81 and 4,684.74 is: 6,464.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,663.67 : 11,955.81 = 4,684.74 : x
  2. Step 2: Convert to fraction form
    8,663.67/11,955.81 = 4,684.74/x
  3. Step 3: Cross multiply
    8,663.67x = 11,955.81 × 4,684.74
  4. Step 4: Simplify right side
    8,663.67x = 56,009,861.34
  5. Step 5: Solve for x
    x = 56,009,861.34/8,663.67
  6. Step 6: Final answer
    x = 6,464.91

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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.