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Finding the Fourth Proportional to 107,468.80, 161,203.20 and 68,070.40

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Solution

The fourth proportional to 107,468.80, 161,203.20 and 68,070.40 is: 102,105.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,468.80 : 161,203.20 = 68,070.40 : x
  2. Step 2: Convert to fraction form
    107,468.80/161,203.20 = 68,070.40/x
  3. Step 3: Cross multiply
    107,468.80x = 161,203.20 × 68,070.40
  4. Step 4: Simplify right side
    107,468.80x = 10,973,166,305.28
  5. Step 5: Solve for x
    x = 10,973,166,305.28/107,468.80
  6. Step 6: Final answer
    x = 102,105.60

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1.5x scale

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.