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Finding the Fourth Proportional to 436,590.57, 654,885.89 and 121,047.49

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Solution

The fourth proportional to 436,590.57, 654,885.89 and 121,047.49 is: 181,571.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,590.57 : 654,885.89 = 121,047.49 : x
  2. Step 2: Convert to fraction form
    436,590.57/654,885.89 = 121,047.49/x
  3. Step 3: Cross multiply
    436,590.57x = 654,885.89 × 121,047.49
  4. Step 4: Simplify right side
    436,590.57x = 79,272,289,341.25
  5. Step 5: Solve for x
    x = 79,272,289,341.25/436,590.57
  6. Step 6: Final answer
    x = 181,571.24

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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.