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Finding the Fourth Proportional to 113,297.79, 156,347.63 and 62,310.47

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Solution

The fourth proportional to 113,297.79, 156,347.63 and 62,310.47 is: 85,986.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,297.79 : 156,347.63 = 62,310.47 : x
  2. Step 2: Convert to fraction form
    113,297.79/156,347.63 = 62,310.47/x
  3. Step 3: Cross multiply
    113,297.79x = 156,347.63 × 62,310.47
  4. Step 4: Simplify right side
    113,297.79x = 9,742,093,799.56
  5. Step 5: Solve for x
    x = 9,742,093,799.56/113,297.79
  6. Step 6: Final answer
    x = 85,986.62

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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.