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Finding the Fourth Proportional to 70,234.66, 105,349.18 and 38,707.22

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Solution

The fourth proportional to 70,234.66, 105,349.18 and 38,707.22 is: 58,059.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,234.66 : 105,349.18 = 38,707.22 : x
  2. Step 2: Convert to fraction form
    70,234.66/105,349.18 = 38,707.22/x
  3. Step 3: Cross multiply
    70,234.66x = 105,349.18 × 38,707.22
  4. Step 4: Simplify right side
    70,234.66x = 4,077,773,887.08
  5. Step 5: Solve for x
    x = 4,077,773,887.08/70,234.66
  6. Step 6: Final answer
    x = 58,059.28

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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.