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Finding the Fourth Proportional to 168,804.10, 253,206.15 and 84,823.30

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Solution

The fourth proportional to 168,804.10, 253,206.15 and 84,823.30 is: 127,234.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,804.10 : 253,206.15 = 84,823.30 : x
  2. Step 2: Convert to fraction form
    168,804.10/253,206.15 = 84,823.30/x
  3. Step 3: Cross multiply
    168,804.10x = 253,206.15 × 84,823.30
  4. Step 4: Simplify right side
    168,804.10x = 21,477,781,223.30
  5. Step 5: Solve for x
    x = 21,477,781,223.30/168,804.10
  6. Step 6: Final answer
    x = 127,234.95

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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.