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Finding the Fourth Proportional to 695,894.13, 960,318.23 and 405,487.71

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Solution

The fourth proportional to 695,894.13, 960,318.23 and 405,487.71 is: 559,563.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,894.13 : 960,318.23 = 405,487.71 : x
  2. Step 2: Convert to fraction form
    695,894.13/960,318.23 = 405,487.71/x
  3. Step 3: Cross multiply
    695,894.13x = 960,318.23 × 405,487.71
  4. Step 4: Simplify right side
    695,894.13x = 389,397,237,926.52
  5. Step 5: Solve for x
    x = 389,397,237,926.52/695,894.13
  6. Step 6: Final answer
    x = 559,563.91

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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.