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Finding the Fourth Proportional to 695,968.83, 960,420.99 and 405,561.90

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Solution

The fourth proportional to 695,968.83, 960,420.99 and 405,561.90 is: 559,666.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,968.83 : 960,420.99 = 405,561.90 : x
  2. Step 2: Convert to fraction form
    695,968.83/960,420.99 = 405,561.90/x
  3. Step 3: Cross multiply
    695,968.83x = 960,420.99 × 405,561.90
  4. Step 4: Simplify right side
    695,968.83x = 389,510,161,504.28
  5. Step 5: Solve for x
    x = 389,510,161,504.28/695,968.83
  6. Step 6: Final answer
    x = 559,666.10

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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.