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Finding the Fourth Proportional to 108,664.40, 163,025.40 and 38,536.40

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Solution

The fourth proportional to 108,664.40, 163,025.40 and 38,536.40 is: 57,814.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,664.40 : 163,025.40 = 38,536.40 : x
  2. Step 2: Convert to fraction form
    108,664.40/163,025.40 = 38,536.40/x
  3. Step 3: Cross multiply
    108,664.40x = 163,025.40 × 38,536.40
  4. Step 4: Simplify right side
    108,664.40x = 6,282,412,024.56
  5. Step 5: Solve for x
    x = 6,282,412,024.56/108,664.40
  6. Step 6: Final answer
    x = 57,814.81

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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.