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Finding the Fourth Proportional to 17,776.34, 26,665.43 and 7,916.32

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Solution

The fourth proportional to 17,776.34, 26,665.43 and 7,916.32 is: 11,874.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,776.34 : 26,665.43 = 7,916.32 : x
  2. Step 2: Convert to fraction form
    17,776.34/26,665.43 = 7,916.32/x
  3. Step 3: Cross multiply
    17,776.34x = 26,665.43 × 7,916.32
  4. Step 4: Simplify right side
    17,776.34x = 211,091,970.57
  5. Step 5: Solve for x
    x = 211,091,970.57/17,776.34
  6. Step 6: Final answer
    x = 11,874.88

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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.