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Finding the Fourth Proportional to 13,995.01, 19,304.64 and 8,957.46

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Solution

The fourth proportional to 13,995.01, 19,304.64 and 8,957.46 is: 12,355.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.01 : 19,304.64 = 8,957.46 : x
  2. Step 2: Convert to fraction form
    13,995.01/19,304.64 = 8,957.46/x
  3. Step 3: Cross multiply
    13,995.01x = 19,304.64 × 8,957.46
  4. Step 4: Simplify right side
    13,995.01x = 172,920,540.61
  5. Step 5: Solve for x
    x = 172,920,540.61/13,995.01
  6. Step 6: Final answer
    x = 12,355.87

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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.