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Finding the Fourth Proportional to 577,217.43, 796,491.05 and 319,059.51

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Solution

The fourth proportional to 577,217.43, 796,491.05 and 319,059.51 is: 440,263.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,217.43 : 796,491.05 = 319,059.51 : x
  2. Step 2: Convert to fraction form
    577,217.43/796,491.05 = 319,059.51/x
  3. Step 3: Cross multiply
    577,217.43x = 796,491.05 × 319,059.51
  4. Step 4: Simplify right side
    577,217.43x = 254,128,041,707.69
  5. Step 5: Solve for x
    x = 254,128,041,707.69/577,217.43
  6. Step 6: Final answer
    x = 440,263.98

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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.