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Finding the Fourth Proportional to 54,845.40, 82,270.80 and 28,601.40

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Solution

The fourth proportional to 54,845.40, 82,270.80 and 28,601.40 is: 42,903.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,845.40 : 82,270.80 = 28,601.40 : x
  2. Step 2: Convert to fraction form
    54,845.40/82,270.80 = 28,601.40/x
  3. Step 3: Cross multiply
    54,845.40x = 82,270.80 × 28,601.40
  4. Step 4: Simplify right side
    54,845.40x = 2,353,060,059.12
  5. Step 5: Solve for x
    x = 2,353,060,059.12/54,845.40
  6. Step 6: Final answer
    x = 42,903.51

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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.