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Finding the Fourth Proportional to 19,134.90, 28,710.72 and 7,444.08

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Solution

The fourth proportional to 19,134.90, 28,710.72 and 7,444.08 is: 11,169.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,134.90 : 28,710.72 = 7,444.08 : x
  2. Step 2: Convert to fraction form
    19,134.90/28,710.72 = 7,444.08/x
  3. Step 3: Cross multiply
    19,134.90x = 28,710.72 × 7,444.08
  4. Step 4: Simplify right side
    19,134.90x = 213,724,896.54
  5. Step 5: Solve for x
    x = 213,724,896.54/19,134.90
  6. Step 6: Final answer
    x = 11,169.38

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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.