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Finding the Fourth Proportional to 9,811.60, 14,700.60 and 4,606.80

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Solution

The fourth proportional to 9,811.60, 14,700.60 and 4,606.80 is: 6,902.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,811.60 : 14,700.60 = 4,606.80 : x
  2. Step 2: Convert to fraction form
    9,811.60/14,700.60 = 4,606.80/x
  3. Step 3: Cross multiply
    9,811.60x = 14,700.60 × 4,606.80
  4. Step 4: Simplify right side
    9,811.60x = 67,722,724.08
  5. Step 5: Solve for x
    x = 67,722,724.08/9,811.60
  6. Step 6: Final answer
    x = 6,902.31

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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.