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Finding the Fourth Proportional to 18,686.34, 27,892.71 and 16,472.07

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Solution

The fourth proportional to 18,686.34, 27,892.71 and 16,472.07 is: 24,587.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.34 : 27,892.71 = 16,472.07 : x
  2. Step 2: Convert to fraction form
    18,686.34/27,892.71 = 16,472.07/x
  3. Step 3: Cross multiply
    18,686.34x = 27,892.71 × 16,472.07
  4. Step 4: Simplify right side
    18,686.34x = 459,450,671.61
  5. Step 5: Solve for x
    x = 459,450,671.61/18,686.34
  6. Step 6: Final answer
    x = 24,587.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.