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Finding the Fourth Proportional to 19,033.92, 28,539.92 and 7,345.60

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Solution

The fourth proportional to 19,033.92, 28,539.92 and 7,345.60 is: 11,014.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,033.92 : 28,539.92 = 7,345.60 : x
  2. Step 2: Convert to fraction form
    19,033.92/28,539.92 = 7,345.60/x
  3. Step 3: Cross multiply
    19,033.92x = 28,539.92 × 7,345.60
  4. Step 4: Simplify right side
    19,033.92x = 209,642,836.35
  5. Step 5: Solve for x
    x = 209,642,836.35/19,033.92
  6. Step 6: Final answer
    x = 11,014.17

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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.