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Finding the Fourth Proportional to 73,612.80, 106,531.20 and 73,612.80

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Solution

The fourth proportional to 73,612.80, 106,531.20 and 73,612.80 is: 106,531.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,612.80 : 106,531.20 = 73,612.80 : x
  2. Step 2: Convert to fraction form
    73,612.80/106,531.20 = 73,612.80/x
  3. Step 3: Cross multiply
    73,612.80x = 106,531.20 × 73,612.80
  4. Step 4: Simplify right side
    73,612.80x = 7,842,059,919.36
  5. Step 5: Solve for x
    x = 7,842,059,919.36/73,612.80
  6. Step 6: Final answer
    x = 106,531.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.