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Finding the Fourth Proportional to 172,369, 258,568.62 and 47,711.08

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Solution

The fourth proportional to 172,369, 258,568.62 and 47,711.08 is: 71,570.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,369 : 258,568.62 = 47,711.08 : x
  2. Step 2: Convert to fraction form
    172,369/258,568.62 = 47,711.08/x
  3. Step 3: Cross multiply
    172,369x = 258,568.62 × 47,711.08
  4. Step 4: Simplify right side
    172,369x = 12,336,588,114.31
  5. Step 5: Solve for x
    x = 12,336,588,114.31/172,369
  6. Step 6: Final answer
    x = 71,570.81

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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.