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Finding the Fourth Proportional to 72,959.13, 109,200.86 and 39,596.45

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Solution

The fourth proportional to 72,959.13, 109,200.86 and 39,596.45 is: 59,265.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,959.13 : 109,200.86 = 39,596.45 : x
  2. Step 2: Convert to fraction form
    72,959.13/109,200.86 = 39,596.45/x
  3. Step 3: Cross multiply
    72,959.13x = 109,200.86 × 39,596.45
  4. Step 4: Simplify right side
    72,959.13x = 4,323,965,797.45
  5. Step 5: Solve for x
    x = 4,323,965,797.45/72,959.13
  6. Step 6: Final answer
    x = 59,265.59

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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.