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Finding the Fourth Proportional to 11,501.74, 17,238.21 and 4,920.22

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Solution

The fourth proportional to 11,501.74, 17,238.21 and 4,920.22 is: 7,374.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,501.74 : 17,238.21 = 4,920.22 : x
  2. Step 2: Convert to fraction form
    11,501.74/17,238.21 = 4,920.22/x
  3. Step 3: Cross multiply
    11,501.74x = 17,238.21 × 4,920.22
  4. Step 4: Simplify right side
    11,501.74x = 84,815,785.61
  5. Step 5: Solve for x
    x = 84,815,785.61/11,501.74
  6. Step 6: Final answer
    x = 7,374.17

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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.