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Finding the Fourth Proportional to 77,342.96, 115,910.76 and 35,698.16

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Solution

The fourth proportional to 77,342.96, 115,910.76 and 35,698.16 is: 53,499.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,342.96 : 115,910.76 = 35,698.16 : x
  2. Step 2: Convert to fraction form
    77,342.96/115,910.76 = 35,698.16/x
  3. Step 3: Cross multiply
    77,342.96x = 115,910.76 × 35,698.16
  4. Step 4: Simplify right side
    77,342.96x = 4,137,800,856.20
  5. Step 5: Solve for x
    x = 4,137,800,856.20/77,342.96
  6. Step 6: Final answer
    x = 53,499.39

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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.