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Finding the Fourth Proportional to 531,109.12, 796,899.12 and 278,329.52

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Solution

The fourth proportional to 531,109.12, 796,899.12 and 278,329.52 is: 417,617.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,109.12 : 796,899.12 = 278,329.52 : x
  2. Step 2: Convert to fraction form
    531,109.12/796,899.12 = 278,329.52/x
  3. Step 3: Cross multiply
    531,109.12x = 796,899.12 × 278,329.52
  4. Step 4: Simplify right side
    531,109.12x = 221,800,545,573.53
  5. Step 5: Solve for x
    x = 221,800,545,573.53/531,109.12
  6. Step 6: Final answer
    x = 417,617.66

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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.