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Finding the Fourth Proportional to 19,042.65, 28,574.78 and 7,356.69

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Solution

The fourth proportional to 19,042.65, 28,574.78 and 7,356.69 is: 11,039.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,042.65 : 28,574.78 = 7,356.69 : x
  2. Step 2: Convert to fraction form
    19,042.65/28,574.78 = 7,356.69/x
  3. Step 3: Cross multiply
    19,042.65x = 28,574.78 × 7,356.69
  4. Step 4: Simplify right side
    19,042.65x = 210,215,761.49
  5. Step 5: Solve for x
    x = 210,215,761.49/19,042.65
  6. Step 6: Final answer
    x = 11,039.21

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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.