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Finding the Fourth Proportional to 60,843.60, 84,021.64 and 57,530.30

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Solution

The fourth proportional to 60,843.60, 84,021.64 and 57,530.30 is: 79,446.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,843.60 : 84,021.64 = 57,530.30 : x
  2. Step 2: Convert to fraction form
    60,843.60/84,021.64 = 57,530.30/x
  3. Step 3: Cross multiply
    60,843.60x = 84,021.64 × 57,530.30
  4. Step 4: Simplify right side
    60,843.60x = 4,833,789,591.76
  5. Step 5: Solve for x
    x = 4,833,789,591.76/60,843.60
  6. Step 6: Final answer
    x = 79,446.15

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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.