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Finding the Fourth Proportional to 52,595.80, 78,844.94 and 20,998.20

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Solution

The fourth proportional to 52,595.80, 78,844.94 and 20,998.20 is: 31,477.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,595.80 : 78,844.94 = 20,998.20 : x
  2. Step 2: Convert to fraction form
    52,595.80/78,844.94 = 20,998.20/x
  3. Step 3: Cross multiply
    52,595.80x = 78,844.94 × 20,998.20
  4. Step 4: Simplify right side
    52,595.80x = 1,655,601,819.11
  5. Step 5: Solve for x
    x = 1,655,601,819.11/52,595.80
  6. Step 6: Final answer
    x = 31,477.83

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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.