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Finding the Fourth Proportional to 45,980.91, 68,969.98 and 12,702.96

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Solution

The fourth proportional to 45,980.91, 68,969.98 and 12,702.96 is: 19,054.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,980.91 : 68,969.98 = 12,702.96 : x
  2. Step 2: Convert to fraction form
    45,980.91/68,969.98 = 12,702.96/x
  3. Step 3: Cross multiply
    45,980.91x = 68,969.98 × 12,702.96
  4. Step 4: Simplify right side
    45,980.91x = 876,122,833.63
  5. Step 5: Solve for x
    x = 876,122,833.63/45,980.91
  6. Step 6: Final answer
    x = 19,054.06

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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.