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Finding the Fourth Proportional to 353,021.76, 487,174.92 and 191,876.72

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Solution

The fourth proportional to 353,021.76, 487,174.92 and 191,876.72 is: 264,792.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,021.76 : 487,174.92 = 191,876.72 : x
  2. Step 2: Convert to fraction form
    353,021.76/487,174.92 = 191,876.72/x
  3. Step 3: Cross multiply
    353,021.76x = 487,174.92 × 191,876.72
  4. Step 4: Simplify right side
    353,021.76x = 93,477,525,715.86
  5. Step 5: Solve for x
    x = 93,477,525,715.86/353,021.76
  6. Step 6: Final answer
    x = 264,792.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.