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Finding the Fourth Proportional to 145,192.44, 200,367.90 and 81,528.87

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Solution

The fourth proportional to 145,192.44, 200,367.90 and 81,528.87 is: 112,511.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,192.44 : 200,367.90 = 81,528.87 : x
  2. Step 2: Convert to fraction form
    145,192.44/200,367.90 = 81,528.87/x
  3. Step 3: Cross multiply
    145,192.44x = 200,367.90 × 81,528.87
  4. Step 4: Simplify right side
    145,192.44x = 16,335,768,471.27
  5. Step 5: Solve for x
    x = 16,335,768,471.27/145,192.44
  6. Step 6: Final answer
    x = 112,511.15

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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.