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Finding the Fourth Proportional to 11,483.62, 15,847.59 and 6,379

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Solution

The fourth proportional to 11,483.62, 15,847.59 and 6,379 is: 8,803.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,483.62 : 15,847.59 = 6,379 : x
  2. Step 2: Convert to fraction form
    11,483.62/15,847.59 = 6,379/x
  3. Step 3: Cross multiply
    11,483.62x = 15,847.59 × 6,379
  4. Step 4: Simplify right side
    11,483.62x = 101,091,776.61
  5. Step 5: Solve for x
    x = 101,091,776.61/11,483.62
  6. Step 6: Final answer
    x = 8,803.13

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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.