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Finding the Fourth Proportional to 108,804.20, 163,076.70 and 45,624.20

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Solution

The fourth proportional to 108,804.20, 163,076.70 and 45,624.20 is: 68,381.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,804.20 : 163,076.70 = 45,624.20 : x
  2. Step 2: Convert to fraction form
    108,804.20/163,076.70 = 45,624.20/x
  3. Step 3: Cross multiply
    108,804.20x = 163,076.70 × 45,624.20
  4. Step 4: Simplify right side
    108,804.20x = 7,440,243,976.14
  5. Step 5: Solve for x
    x = 7,440,243,976.14/108,804.20
  6. Step 6: Final answer
    x = 68,381.96

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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.