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Finding the Fourth Proportional to 53,963.20, 80,944.80 and 34,280.20

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Solution

The fourth proportional to 53,963.20, 80,944.80 and 34,280.20 is: 51,420.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,963.20 : 80,944.80 = 34,280.20 : x
  2. Step 2: Convert to fraction form
    53,963.20/80,944.80 = 34,280.20/x
  3. Step 3: Cross multiply
    53,963.20x = 80,944.80 × 34,280.20
  4. Step 4: Simplify right side
    53,963.20x = 2,774,803,932.96
  5. Step 5: Solve for x
    x = 2,774,803,932.96/53,963.20
  6. Step 6: Final answer
    x = 51,420.30

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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.