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Finding the Fourth Proportional to 695,965.73, 960,416.88 and 405,559.13

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Solution

The fourth proportional to 695,965.73, 960,416.88 and 405,559.13 is: 559,662.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,965.73 : 960,416.88 = 405,559.13 : x
  2. Step 2: Convert to fraction form
    695,965.73/960,416.88 = 405,559.13/x
  3. Step 3: Cross multiply
    695,965.73x = 960,416.88 × 405,559.13
  4. Step 4: Simplify right side
    695,965.73x = 389,505,834,290.11
  5. Step 5: Solve for x
    x = 389,505,834,290.11/695,965.73
  6. Step 6: Final answer
    x = 559,662.38

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1.5x scale

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.