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Finding the Fourth Proportional to 70,538.92, 105,835.92 and 31,068.28

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Solution

The fourth proportional to 70,538.92, 105,835.92 and 31,068.28 is: 46,614.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,538.92 : 105,835.92 = 31,068.28 : x
  2. Step 2: Convert to fraction form
    70,538.92/105,835.92 = 31,068.28/x
  3. Step 3: Cross multiply
    70,538.92x = 105,835.92 × 31,068.28
  4. Step 4: Simplify right side
    70,538.92x = 3,288,139,996.62
  5. Step 5: Solve for x
    x = 3,288,139,996.62/70,538.92
  6. Step 6: Final answer
    x = 46,614.55

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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.