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Finding the Fourth Proportional to 159,861.19, 239,739.86 and 53,216.50

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Solution

The fourth proportional to 159,861.19, 239,739.86 and 53,216.50 is: 79,807.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,861.19 : 239,739.86 = 53,216.50 : x
  2. Step 2: Convert to fraction form
    159,861.19/239,739.86 = 53,216.50/x
  3. Step 3: Cross multiply
    159,861.19x = 239,739.86 × 53,216.50
  4. Step 4: Simplify right side
    159,861.19x = 12,758,115,060.99
  5. Step 5: Solve for x
    x = 12,758,115,060.99/159,861.19
  6. Step 6: Final answer
    x = 79,807.46

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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.