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Finding the Fourth Proportional to 9,393.30, 12,961.50 and 5,360.70

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Solution

The fourth proportional to 9,393.30, 12,961.50 and 5,360.70 is: 7,397.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,393.30 : 12,961.50 = 5,360.70 : x
  2. Step 2: Convert to fraction form
    9,393.30/12,961.50 = 5,360.70/x
  3. Step 3: Cross multiply
    9,393.30x = 12,961.50 × 5,360.70
  4. Step 4: Simplify right side
    9,393.30x = 69,482,713.05
  5. Step 5: Solve for x
    x = 69,482,713.05/9,393.30
  6. Step 6: Final answer
    x = 7,397.05

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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.