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Finding the Fourth Proportional to 64,874.32, 97,315.32 and 18,127.19

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Solution

The fourth proportional to 64,874.32, 97,315.32 and 18,127.19 is: 27,191.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,874.32 : 97,315.32 = 18,127.19 : x
  2. Step 2: Convert to fraction form
    64,874.32/97,315.32 = 18,127.19/x
  3. Step 3: Cross multiply
    64,874.32x = 97,315.32 × 18,127.19
  4. Step 4: Simplify right side
    64,874.32x = 1,764,053,606.82
  5. Step 5: Solve for x
    x = 1,764,053,606.82/64,874.32
  6. Step 6: Final answer
    x = 27,191.86

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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.