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Finding the Fourth Proportional to 19,059.20, 28,605.04 and 7,375.76

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Solution

The fourth proportional to 19,059.20, 28,605.04 and 7,375.76 is: 11,069.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,059.20 : 28,605.04 = 7,375.76 : x
  2. Step 2: Convert to fraction form
    19,059.20/28,605.04 = 7,375.76/x
  3. Step 3: Cross multiply
    19,059.20x = 28,605.04 × 7,375.76
  4. Step 4: Simplify right side
    19,059.20x = 210,983,909.83
  5. Step 5: Solve for x
    x = 210,983,909.83/19,059.20
  6. Step 6: Final answer
    x = 11,069.92

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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.