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Finding the Fourth Proportional to 79,595.76, 109,805.34 and 47,709.30

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Solution

The fourth proportional to 79,595.76, 109,805.34 and 47,709.30 is: 65,816.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,595.76 : 109,805.34 = 47,709.30 : x
  2. Step 2: Convert to fraction form
    79,595.76/109,805.34 = 47,709.30/x
  3. Step 3: Cross multiply
    79,595.76x = 109,805.34 × 47,709.30
  4. Step 4: Simplify right side
    79,595.76x = 5,238,735,907.66
  5. Step 5: Solve for x
    x = 5,238,735,907.66/79,595.76
  6. Step 6: Final answer
    x = 65,816.77

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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.