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Finding the Fourth Proportional to 4,828.55, 7,202.22 and 4,385.61

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Solution

The fourth proportional to 4,828.55, 7,202.22 and 4,385.61 is: 6,541.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,828.55 : 7,202.22 = 4,385.61 : x
  2. Step 2: Convert to fraction form
    4,828.55/7,202.22 = 4,385.61/x
  3. Step 3: Cross multiply
    4,828.55x = 7,202.22 × 4,385.61
  4. Step 4: Simplify right side
    4,828.55x = 31,586,128.05
  5. Step 5: Solve for x
    x = 31,586,128.05/4,828.55
  6. Step 6: Final answer
    x = 6,541.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.