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Finding the Fourth Proportional to 172,665.70, 258,998.55 and 48,006.70

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Solution

The fourth proportional to 172,665.70, 258,998.55 and 48,006.70 is: 72,010.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,665.70 : 258,998.55 = 48,006.70 : x
  2. Step 2: Convert to fraction form
    172,665.70/258,998.55 = 48,006.70/x
  3. Step 3: Cross multiply
    172,665.70x = 258,998.55 × 48,006.70
  4. Step 4: Simplify right side
    172,665.70x = 12,433,665,690.29
  5. Step 5: Solve for x
    x = 12,433,665,690.29/172,665.70
  6. Step 6: Final answer
    x = 72,010.05

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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.