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Finding the Fourth Proportional to 11,368.69, 15,689.85 and 6,652.97

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Solution

The fourth proportional to 11,368.69, 15,689.85 and 6,652.97 is: 9,181.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,368.69 : 15,689.85 = 6,652.97 : x
  2. Step 2: Convert to fraction form
    11,368.69/15,689.85 = 6,652.97/x
  3. Step 3: Cross multiply
    11,368.69x = 15,689.85 × 6,652.97
  4. Step 4: Simplify right side
    11,368.69x = 104,384,094.22
  5. Step 5: Solve for x
    x = 104,384,094.22/11,368.69
  6. Step 6: Final answer
    x = 9,181.72

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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.