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Finding the Fourth Proportional to 69,057.15, 103,640.40 and 26,957.40

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Solution

The fourth proportional to 69,057.15, 103,640.40 and 26,957.40 is: 40,457.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,057.15 : 103,640.40 = 26,957.40 : x
  2. Step 2: Convert to fraction form
    69,057.15/103,640.40 = 26,957.40/x
  3. Step 3: Cross multiply
    69,057.15x = 103,640.40 × 26,957.40
  4. Step 4: Simplify right side
    69,057.15x = 2,793,875,718.96
  5. Step 5: Solve for x
    x = 2,793,875,718.96/69,057.15
  6. Step 6: Final answer
    x = 40,457.44

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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.