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Finding the Fourth Proportional to 49,774.98, 74,660.60 and 12,335.16

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Solution

The fourth proportional to 49,774.98, 74,660.60 and 12,335.16 is: 18,502.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,774.98 : 74,660.60 = 12,335.16 : x
  2. Step 2: Convert to fraction form
    49,774.98/74,660.60 = 12,335.16/x
  3. Step 3: Cross multiply
    49,774.98x = 74,660.60 × 12,335.16
  4. Step 4: Simplify right side
    49,774.98x = 920,950,446.70
  5. Step 5: Solve for x
    x = 920,950,446.70/49,774.98
  6. Step 6: Final answer
    x = 18,502.28

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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.