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Finding the Fourth Proportional to 695,106, 959,260.86 and 393,300

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Solution

The fourth proportional to 695,106, 959,260.86 and 393,300 is: 542,762.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,106 : 959,260.86 = 393,300 : x
  2. Step 2: Convert to fraction form
    695,106/959,260.86 = 393,300/x
  3. Step 3: Cross multiply
    695,106x = 959,260.86 × 393,300
  4. Step 4: Simplify right side
    695,106x = 377,277,296,238
  5. Step 5: Solve for x
    x = 377,277,296,238/695,106
  6. Step 6: Final answer
    x = 542,762.25

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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.