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Finding the Fourth Proportional to 18,607.74, 27,916.47 and 10,809.06

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Solution

The fourth proportional to 18,607.74, 27,916.47 and 10,809.06 is: 16,216.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.74 : 27,916.47 = 10,809.06 : x
  2. Step 2: Convert to fraction form
    18,607.74/27,916.47 = 10,809.06/x
  3. Step 3: Cross multiply
    18,607.74x = 27,916.47 × 10,809.06
  4. Step 4: Simplify right side
    18,607.74x = 301,750,799.22
  5. Step 5: Solve for x
    x = 301,750,799.22/18,607.74
  6. Step 6: Final answer
    x = 16,216.41

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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.