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Finding the Fourth Proportional to 15,695.92, 21,666.05 and 10,392.44

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Solution

The fourth proportional to 15,695.92, 21,666.05 and 10,392.44 is: 14,345.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,695.92 : 21,666.05 = 10,392.44 : x
  2. Step 2: Convert to fraction form
    15,695.92/21,666.05 = 10,392.44/x
  3. Step 3: Cross multiply
    15,695.92x = 21,666.05 × 10,392.44
  4. Step 4: Simplify right side
    15,695.92x = 225,163,178.83
  5. Step 5: Solve for x
    x = 225,163,178.83/15,695.92
  6. Step 6: Final answer
    x = 14,345.33

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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.