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Finding the Fourth Proportional to 695,352.78, 959,477.22 and 405,012.12

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Solution

The fourth proportional to 695,352.78, 959,477.22 and 405,012.12 is: 558,852.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,352.78 : 959,477.22 = 405,012.12 : x
  2. Step 2: Convert to fraction form
    695,352.78/959,477.22 = 405,012.12/x
  3. Step 3: Cross multiply
    695,352.78x = 959,477.22 × 405,012.12
  4. Step 4: Simplify right side
    695,352.78x = 388,599,908,600.55
  5. Step 5: Solve for x
    x = 388,599,908,600.55/695,352.78
  6. Step 6: Final answer
    x = 558,852.89

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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.