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Finding the Fourth Proportional to 235,810.30, 353,715.45 and 141,331.90

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Solution

The fourth proportional to 235,810.30, 353,715.45 and 141,331.90 is: 211,997.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,810.30 : 353,715.45 = 141,331.90 : x
  2. Step 2: Convert to fraction form
    235,810.30/353,715.45 = 141,331.90/x
  3. Step 3: Cross multiply
    235,810.30x = 353,715.45 × 141,331.90
  4. Step 4: Simplify right side
    235,810.30x = 49,991,276,607.86
  5. Step 5: Solve for x
    x = 49,991,276,607.86/235,810.30
  6. Step 6: Final answer
    x = 211,997.85

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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.