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Finding the Fourth Proportional to 9,579.60, 14,350.72 and 5,406.99

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Solution

The fourth proportional to 9,579.60, 14,350.72 and 5,406.99 is: 8,099.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,579.60 : 14,350.72 = 5,406.99 : x
  2. Step 2: Convert to fraction form
    9,579.60/14,350.72 = 5,406.99/x
  3. Step 3: Cross multiply
    9,579.60x = 14,350.72 × 5,406.99
  4. Step 4: Simplify right side
    9,579.60x = 77,594,199.53
  5. Step 5: Solve for x
    x = 77,594,199.53/9,579.60
  6. Step 6: Final answer
    x = 8,099.94

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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.