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Finding the Fourth Proportional to 57,216.40, 85,824.60 and 48,576.40

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Solution

The fourth proportional to 57,216.40, 85,824.60 and 48,576.40 is: 72,864.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,216.40 : 85,824.60 = 48,576.40 : x
  2. Step 2: Convert to fraction form
    57,216.40/85,824.60 = 48,576.40/x
  3. Step 3: Cross multiply
    57,216.40x = 85,824.60 × 48,576.40
  4. Step 4: Simplify right side
    57,216.40x = 4,169,050,099.44
  5. Step 5: Solve for x
    x = 4,169,050,099.44/57,216.40
  6. Step 6: Final answer
    x = 72,864.60

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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.