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Finding the Fourth Proportional to 79,856.01, 119,863.27 and 42,416.39

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Solution

The fourth proportional to 79,856.01, 119,863.27 and 42,416.39 is: 63,666.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,856.01 : 119,863.27 = 42,416.39 : x
  2. Step 2: Convert to fraction form
    79,856.01/119,863.27 = 42,416.39/x
  3. Step 3: Cross multiply
    79,856.01x = 119,863.27 × 42,416.39
  4. Step 4: Simplify right side
    79,856.01x = 5,084,167,207.00
  5. Step 5: Solve for x
    x = 5,084,167,207.00/79,856.01
  6. Step 6: Final answer
    x = 63,666.68

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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.