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Finding the Fourth Proportional to 231,657.40, 347,710.80 and 111,798.72

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Solution

The fourth proportional to 231,657.40, 347,710.80 and 111,798.72 is: 167,806.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,657.40 : 347,710.80 = 111,798.72 : x
  2. Step 2: Convert to fraction form
    231,657.40/347,710.80 = 111,798.72/x
  3. Step 3: Cross multiply
    231,657.40x = 347,710.80 × 111,798.72
  4. Step 4: Simplify right side
    231,657.40x = 38,873,622,370.18
  5. Step 5: Solve for x
    x = 38,873,622,370.18/231,657.40
  6. Step 6: Final answer
    x = 167,806.52

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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.