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Finding the Fourth Proportional to 113,528.81, 156,669.77 and 63,227.81

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Solution

The fourth proportional to 113,528.81, 156,669.77 and 63,227.81 is: 87,254.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,528.81 : 156,669.77 = 63,227.81 : x
  2. Step 2: Convert to fraction form
    113,528.81/156,669.77 = 63,227.81/x
  3. Step 3: Cross multiply
    113,528.81x = 156,669.77 × 63,227.81
  4. Step 4: Simplify right side
    113,528.81x = 9,905,887,000.05
  5. Step 5: Solve for x
    x = 9,905,887,000.05/113,528.81
  6. Step 6: Final answer
    x = 87,254.39

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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.