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Finding the Fourth Proportional to 70,585.86, 97,405.41 and 38,755.29

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Solution

The fourth proportional to 70,585.86, 97,405.41 and 38,755.29 is: 53,480.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,585.86 : 97,405.41 = 38,755.29 : x
  2. Step 2: Convert to fraction form
    70,585.86/97,405.41 = 38,755.29/x
  3. Step 3: Cross multiply
    70,585.86x = 97,405.41 × 38,755.29
  4. Step 4: Simplify right side
    70,585.86x = 3,774,974,912.12
  5. Step 5: Solve for x
    x = 3,774,974,912.12/70,585.86
  6. Step 6: Final answer
    x = 53,480.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.