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Finding the Fourth Proportional to 28,165.01, 38,822.64 and 19,087.61

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Solution

The fourth proportional to 28,165.01, 38,822.64 and 19,087.61 is: 26,310.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,165.01 : 38,822.64 = 19,087.61 : x
  2. Step 2: Convert to fraction form
    28,165.01/38,822.64 = 19,087.61/x
  3. Step 3: Cross multiply
    28,165.01x = 38,822.64 × 19,087.61
  4. Step 4: Simplify right side
    28,165.01x = 741,031,411.49
  5. Step 5: Solve for x
    x = 741,031,411.49/28,165.01
  6. Step 6: Final answer
    x = 26,310.35

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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.