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Finding the Fourth Proportional to 113,647.50, 156,806.28 and 73,352.70

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Solution

The fourth proportional to 113,647.50, 156,806.28 and 73,352.70 is: 101,209.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,647.50 : 156,806.28 = 73,352.70 : x
  2. Step 2: Convert to fraction form
    113,647.50/156,806.28 = 73,352.70/x
  3. Step 3: Cross multiply
    113,647.50x = 156,806.28 × 73,352.70
  4. Step 4: Simplify right side
    113,647.50x = 11,502,164,014.96
  5. Step 5: Solve for x
    x = 11,502,164,014.96/113,647.50
  6. Step 6: Final answer
    x = 101,209.12

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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.