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Finding the Fourth Proportional to 115,718.91, 173,676.99 and 45,647.43

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Solution

The fourth proportional to 115,718.91, 173,676.99 and 45,647.43 is: 68,510.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,718.91 : 173,676.99 = 45,647.43 : x
  2. Step 2: Convert to fraction form
    115,718.91/173,676.99 = 45,647.43/x
  3. Step 3: Cross multiply
    115,718.91x = 173,676.99 × 45,647.43
  4. Step 4: Simplify right side
    115,718.91x = 7,927,908,243.64
  5. Step 5: Solve for x
    x = 7,927,908,243.64/115,718.91
  6. Step 6: Final answer
    x = 68,510.05

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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.