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Finding the Fourth Proportional to 19,059.60, 28,589.40 and 5,913.30

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Solution

The fourth proportional to 19,059.60, 28,589.40 and 5,913.30 is: 8,869.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,059.60 : 28,589.40 = 5,913.30 : x
  2. Step 2: Convert to fraction form
    19,059.60/28,589.40 = 5,913.30/x
  3. Step 3: Cross multiply
    19,059.60x = 28,589.40 × 5,913.30
  4. Step 4: Simplify right side
    19,059.60x = 169,057,699.02
  5. Step 5: Solve for x
    x = 169,057,699.02/19,059.60
  6. Step 6: Final answer
    x = 8,869.95

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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.