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Finding the Fourth Proportional to 116,659.80, 175,076.10 and 77,203.80

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Solution

The fourth proportional to 116,659.80, 175,076.10 and 77,203.80 is: 115,862.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,659.80 : 175,076.10 = 77,203.80 : x
  2. Step 2: Convert to fraction form
    116,659.80/175,076.10 = 77,203.80/x
  3. Step 3: Cross multiply
    116,659.80x = 175,076.10 × 77,203.80
  4. Step 4: Simplify right side
    116,659.80x = 13,516,540,209.18
  5. Step 5: Solve for x
    x = 13,516,540,209.18/116,659.80
  6. Step 6: Final answer
    x = 115,862.88

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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.