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Finding the Fourth Proportional to 86,247.86, 129,360.83 and 64,093.55

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Solution

The fourth proportional to 86,247.86, 129,360.83 and 64,093.55 is: 96,132.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,247.86 : 129,360.83 = 64,093.55 : x
  2. Step 2: Convert to fraction form
    86,247.86/129,360.83 = 64,093.55/x
  3. Step 3: Cross multiply
    86,247.86x = 129,360.83 × 64,093.55
  4. Step 4: Simplify right side
    86,247.86x = 8,291,193,858.37
  5. Step 5: Solve for x
    x = 8,291,193,858.37/86,247.86
  6. Step 6: Final answer
    x = 96,132.17

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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.