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Finding the Fourth Proportional to 106,321.08, 146,733.46 and 79,416.92

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Solution

The fourth proportional to 106,321.08, 146,733.46 and 79,416.92 is: 109,603.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,321.08 : 146,733.46 = 79,416.92 : x
  2. Step 2: Convert to fraction form
    106,321.08/146,733.46 = 79,416.92/x
  3. Step 3: Cross multiply
    106,321.08x = 146,733.46 × 79,416.92
  4. Step 4: Simplify right side
    106,321.08x = 11,653,119,454.14
  5. Step 5: Solve for x
    x = 11,653,119,454.14/106,321.08
  6. Step 6: Final answer
    x = 109,603.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.