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Finding the Fourth Proportional to 577,436.88, 796,830.57 and 319,298.88

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Solution

The fourth proportional to 577,436.88, 796,830.57 and 319,298.88 is: 440,614.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,436.88 : 796,830.57 = 319,298.88 : x
  2. Step 2: Convert to fraction form
    577,436.88/796,830.57 = 319,298.88/x
  3. Step 3: Cross multiply
    577,436.88x = 796,830.57 × 319,298.88
  4. Step 4: Simplify right side
    577,436.88x = 254,427,108,550.76
  5. Step 5: Solve for x
    x = 254,427,108,550.76/577,436.88
  6. Step 6: Final answer
    x = 440,614.58

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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.