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Finding the Fourth Proportional to 86,330.80, 129,486.84 and 23,157.20

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Solution

The fourth proportional to 86,330.80, 129,486.84 and 23,157.20 is: 34,733.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,330.80 : 129,486.84 = 23,157.20 : x
  2. Step 2: Convert to fraction form
    86,330.80/129,486.84 = 23,157.20/x
  3. Step 3: Cross multiply
    86,330.80x = 129,486.84 × 23,157.20
  4. Step 4: Simplify right side
    86,330.80x = 2,998,552,651.25
  5. Step 5: Solve for x
    x = 2,998,552,651.25/86,330.80
  6. Step 6: Final answer
    x = 34,733.29

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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.