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Finding the Fourth Proportional to 113,201, 156,222.51 and 62,900

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Solution

The fourth proportional to 113,201, 156,222.51 and 62,900 is: 86,804.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,201 : 156,222.51 = 62,900 : x
  2. Step 2: Convert to fraction form
    113,201/156,222.51 = 62,900/x
  3. Step 3: Cross multiply
    113,201x = 156,222.51 × 62,900
  4. Step 4: Simplify right side
    113,201x = 9,826,395,879
  5. Step 5: Solve for x
    x = 9,826,395,879/113,201
  6. Step 6: Final answer
    x = 86,804.85

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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.