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Finding the Fourth Proportional to 11,398.61, 15,730.03 and 6,362.77

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Solution

The fourth proportional to 11,398.61, 15,730.03 and 6,362.77 is: 8,780.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,398.61 : 15,730.03 = 6,362.77 : x
  2. Step 2: Convert to fraction form
    11,398.61/15,730.03 = 6,362.77/x
  3. Step 3: Cross multiply
    11,398.61x = 15,730.03 × 6,362.77
  4. Step 4: Simplify right side
    11,398.61x = 100,086,562.98
  5. Step 5: Solve for x
    x = 100,086,562.98/11,398.61
  6. Step 6: Final answer
    x = 8,780.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.