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Finding the Fourth Proportional to 86,346.60, 129,552.30 and 33,793.80

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Solution

The fourth proportional to 86,346.60, 129,552.30 and 33,793.80 is: 50,703.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,346.60 : 129,552.30 = 33,793.80 : x
  2. Step 2: Convert to fraction form
    86,346.60/129,552.30 = 33,793.80/x
  3. Step 3: Cross multiply
    86,346.60x = 129,552.30 × 33,793.80
  4. Step 4: Simplify right side
    86,346.60x = 4,378,064,515.74
  5. Step 5: Solve for x
    x = 4,378,064,515.74/86,346.60
  6. Step 6: Final answer
    x = 50,703.38

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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.