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Finding the Fourth Proportional to 19,042.40, 28,574.40 and 7,356.44

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Solution

The fourth proportional to 19,042.40, 28,574.40 and 7,356.44 is: 11,038.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,042.40 : 28,574.40 = 7,356.44 : x
  2. Step 2: Convert to fraction form
    19,042.40/28,574.40 = 7,356.44/x
  3. Step 3: Cross multiply
    19,042.40x = 28,574.40 × 7,356.44
  4. Step 4: Simplify right side
    19,042.40x = 210,205,859.14
  5. Step 5: Solve for x
    x = 210,205,859.14/19,042.40
  6. Step 6: Final answer
    x = 11,038.83

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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.