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Finding the Fourth Proportional to 196,490.76, 294,489.64 and 84,039

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Solution

The fourth proportional to 196,490.76, 294,489.64 and 84,039 is: 125,953.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,490.76 : 294,489.64 = 84,039 : x
  2. Step 2: Convert to fraction form
    196,490.76/294,489.64 = 84,039/x
  3. Step 3: Cross multiply
    196,490.76x = 294,489.64 × 84,039
  4. Step 4: Simplify right side
    196,490.76x = 24,748,614,855.96
  5. Step 5: Solve for x
    x = 24,748,614,855.96/196,490.76
  6. Step 6: Final answer
    x = 125,953.07

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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.