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Finding the Fourth Proportional to 28,341.87, 42,509.57 and 7,566.99

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Solution

The fourth proportional to 28,341.87, 42,509.57 and 7,566.99 is: 11,349.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,341.87 : 42,509.57 = 7,566.99 : x
  2. Step 2: Convert to fraction form
    28,341.87/42,509.57 = 7,566.99/x
  3. Step 3: Cross multiply
    28,341.87x = 42,509.57 × 7,566.99
  4. Step 4: Simplify right side
    28,341.87x = 321,669,453.26
  5. Step 5: Solve for x
    x = 321,669,453.26/28,341.87
  6. Step 6: Final answer
    x = 11,349.62

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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.