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Finding the Fourth Proportional to 172,446,543.86, 258,673,489.22 and 61,789,440.02

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Solution

The fourth proportional to 172,446,543.86, 258,673,489.22 and 61,789,440.02 is: 92,685,476.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,446,543.86 : 258,673,489.22 = 61,789,440.02 : x
  2. Step 2: Convert to fraction form
    172,446,543.86/258,673,489.22 = 61,789,440.02/x
  3. Step 3: Cross multiply
    172,446,543.86x = 258,673,489.22 × 61,789,440.02
  4. Step 4: Simplify right side
    172,446,543.86x = 15,983,290,045,784,412
  5. Step 5: Solve for x
    x = 15,983,290,045,784,412/172,446,543.86
  6. Step 6: Final answer
    x = 92,685,476.26

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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.