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Finding the Fourth Proportional to 9,342.91, 12,893.99 and 5,364.80

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Solution

The fourth proportional to 9,342.91, 12,893.99 and 5,364.80 is: 7,403.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,342.91 : 12,893.99 = 5,364.80 : x
  2. Step 2: Convert to fraction form
    9,342.91/12,893.99 = 5,364.80/x
  3. Step 3: Cross multiply
    9,342.91x = 12,893.99 × 5,364.80
  4. Step 4: Simplify right side
    9,342.91x = 69,173,626.49
  5. Step 5: Solve for x
    x = 69,173,626.49/9,342.91
  6. Step 6: Final answer
    x = 7,403.87

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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.