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Finding the Fourth Proportional to 9,803.88, 14,695.70 and 3,878.37

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Solution

The fourth proportional to 9,803.88, 14,695.70 and 3,878.37 is: 5,813.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,803.88 : 14,695.70 = 3,878.37 : x
  2. Step 2: Convert to fraction form
    9,803.88/14,695.70 = 3,878.37/x
  3. Step 3: Cross multiply
    9,803.88x = 14,695.70 × 3,878.37
  4. Step 4: Simplify right side
    9,803.88x = 56,995,342.62
  5. Step 5: Solve for x
    x = 56,995,342.62/9,803.88
  6. Step 6: Final answer
    x = 5,813.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.