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Finding the Fourth Proportional to 83,777.60, 115,640.04 and 53,644.11

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Solution

The fourth proportional to 83,777.60, 115,640.04 and 53,644.11 is: 74,046.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,777.60 : 115,640.04 = 53,644.11 : x
  2. Step 2: Convert to fraction form
    83,777.60/115,640.04 = 53,644.11/x
  3. Step 3: Cross multiply
    83,777.60x = 115,640.04 × 53,644.11
  4. Step 4: Simplify right side
    83,777.60x = 6,203,407,026.16
  5. Step 5: Solve for x
    x = 6,203,407,026.16/83,777.60
  6. Step 6: Final answer
    x = 74,046.13

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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.