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Finding the Fourth Proportional to 53,866.77, 80,805.78 and 20,586.60

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Solution

The fourth proportional to 53,866.77, 80,805.78 and 20,586.60 is: 30,882.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,866.77 : 80,805.78 = 20,586.60 : x
  2. Step 2: Convert to fraction form
    53,866.77/80,805.78 = 20,586.60/x
  3. Step 3: Cross multiply
    53,866.77x = 80,805.78 × 20,586.60
  4. Step 4: Simplify right side
    53,866.77x = 1,663,516,270.55
  5. Step 5: Solve for x
    x = 1,663,516,270.55/53,866.77
  6. Step 6: Final answer
    x = 30,882.05

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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.