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Finding the Fourth Proportional to 8,960.54, 12,365.88 and 4,981.58

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Solution

The fourth proportional to 8,960.54, 12,365.88 and 4,981.58 is: 6,874.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,960.54 : 12,365.88 = 4,981.58 : x
  2. Step 2: Convert to fraction form
    8,960.54/12,365.88 = 4,981.58/x
  3. Step 3: Cross multiply
    8,960.54x = 12,365.88 × 4,981.58
  4. Step 4: Simplify right side
    8,960.54x = 61,601,620.49
  5. Step 5: Solve for x
    x = 61,601,620.49/8,960.54
  6. Step 6: Final answer
    x = 6,874.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.