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Finding the Fourth Proportional to 12,292.70, 18,438.84 and 3,058.70

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Solution

The fourth proportional to 12,292.70, 18,438.84 and 3,058.70 is: 4,587.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,292.70 : 18,438.84 = 3,058.70 : x
  2. Step 2: Convert to fraction form
    12,292.70/18,438.84 = 3,058.70/x
  3. Step 3: Cross multiply
    12,292.70x = 18,438.84 × 3,058.70
  4. Step 4: Simplify right side
    12,292.70x = 56,398,787.71
  5. Step 5: Solve for x
    x = 56,398,787.71/12,292.70
  6. Step 6: Final answer
    x = 4,587.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.