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Finding the Fourth Proportional to 4,855.76, 7,317.52 and 4,393.92

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Solution

The fourth proportional to 4,855.76, 7,317.52 and 4,393.92 is: 6,621.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,855.76 : 7,317.52 = 4,393.92 : x
  2. Step 2: Convert to fraction form
    4,855.76/7,317.52 = 4,393.92/x
  3. Step 3: Cross multiply
    4,855.76x = 7,317.52 × 4,393.92
  4. Step 4: Simplify right side
    4,855.76x = 32,152,597.48
  5. Step 5: Solve for x
    x = 32,152,597.48/4,855.76
  6. Step 6: Final answer
    x = 6,621.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.