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Finding the Fourth Proportional to 4,674.78, 6,981.86 and 4,235.15

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Solution

The fourth proportional to 4,674.78, 6,981.86 and 4,235.15 is: 6,325.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,674.78 : 6,981.86 = 4,235.15 : x
  2. Step 2: Convert to fraction form
    4,674.78/6,981.86 = 4,235.15/x
  3. Step 3: Cross multiply
    4,674.78x = 6,981.86 × 4,235.15
  4. Step 4: Simplify right side
    4,674.78x = 29,569,252.42
  5. Step 5: Solve for x
    x = 29,569,252.42/4,674.78
  6. Step 6: Final answer
    x = 6,325.27

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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.