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Finding the Fourth Proportional to 53,888.20, 80,793.90 and 20,595.40

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Solution

The fourth proportional to 53,888.20, 80,793.90 and 20,595.40 is: 30,878.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,888.20 : 80,793.90 = 20,595.40 : x
  2. Step 2: Convert to fraction form
    53,888.20/80,793.90 = 20,595.40/x
  3. Step 3: Cross multiply
    53,888.20x = 80,793.90 × 20,595.40
  4. Step 4: Simplify right side
    53,888.20x = 1,663,982,688.06
  5. Step 5: Solve for x
    x = 1,663,982,688.06/53,888.20
  6. Step 6: Final answer
    x = 30,878.42

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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.