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Finding the Fourth Proportional to 123,801.30, 170,843.22 and 67,212.72

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Solution

The fourth proportional to 123,801.30, 170,843.22 and 67,212.72 is: 92,752.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,801.30 : 170,843.22 = 67,212.72 : x
  2. Step 2: Convert to fraction form
    123,801.30/170,843.22 = 67,212.72/x
  3. Step 3: Cross multiply
    123,801.30x = 170,843.22 × 67,212.72
  4. Step 4: Simplify right side
    123,801.30x = 11,482,837,509.76
  5. Step 5: Solve for x
    x = 11,482,837,509.76/123,801.30
  6. Step 6: Final answer
    x = 92,752.16

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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.