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Finding the Fourth Proportional to 108,328.16, 162,472.32 and 49,149.60

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Solution

The fourth proportional to 108,328.16, 162,472.32 and 49,149.60 is: 73,715.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,328.16 : 162,472.32 = 49,149.60 : x
  2. Step 2: Convert to fraction form
    108,328.16/162,472.32 = 49,149.60/x
  3. Step 3: Cross multiply
    108,328.16x = 162,472.32 × 49,149.60
  4. Step 4: Simplify right side
    108,328.16x = 7,985,449,539.07
  5. Step 5: Solve for x
    x = 7,985,449,539.07/108,328.16
  6. Step 6: Final answer
    x = 73,715.36

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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.