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Finding the Fourth Proportional to 77,133.60, 115,786.80 and 59,680.80

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Solution

The fourth proportional to 77,133.60, 115,786.80 and 59,680.80 is: 89,588.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,133.60 : 115,786.80 = 59,680.80 : x
  2. Step 2: Convert to fraction form
    77,133.60/115,786.80 = 59,680.80/x
  3. Step 3: Cross multiply
    77,133.60x = 115,786.80 × 59,680.80
  4. Step 4: Simplify right side
    77,133.60x = 6,910,248,853.44
  5. Step 5: Solve for x
    x = 6,910,248,853.44/77,133.60
  6. Step 6: Final answer
    x = 89,588.05

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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.