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Finding the Fourth Proportional to 695,961.32, 960,410.66 and 405,554.40

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Solution

The fourth proportional to 695,961.32, 960,410.66 and 405,554.40 is: 559,655.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,961.32 : 960,410.66 = 405,554.40 : x
  2. Step 2: Convert to fraction form
    695,961.32/960,410.66 = 405,554.40/x
  3. Step 3: Cross multiply
    695,961.32x = 960,410.66 × 405,554.40
  4. Step 4: Simplify right side
    695,961.32x = 389,498,766,942.13
  5. Step 5: Solve for x
    x = 389,498,766,942.13/695,961.32
  6. Step 6: Final answer
    x = 559,655.77

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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.