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Finding the Fourth Proportional to 123,820.08, 170,866.92 and 67,230.16

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Solution

The fourth proportional to 123,820.08, 170,866.92 and 67,230.16 is: 92,775.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,820.08 : 170,866.92 = 67,230.16 : x
  2. Step 2: Convert to fraction form
    123,820.08/170,866.92 = 67,230.16/x
  3. Step 3: Cross multiply
    123,820.08x = 170,866.92 × 67,230.16
  4. Step 4: Simplify right side
    123,820.08x = 11,487,410,370.31
  5. Step 5: Solve for x
    x = 11,487,410,370.31/123,820.08
  6. Step 6: Final answer
    x = 92,775.02

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1.5x scale

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.