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Finding the Fourth Proportional to 707,040.54, 975,737.91 and 401,129.82

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Solution

The fourth proportional to 707,040.54, 975,737.91 and 401,129.82 is: 553,571.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,040.54 : 975,737.91 = 401,129.82 : x
  2. Step 2: Convert to fraction form
    707,040.54/975,737.91 = 401,129.82/x
  3. Step 3: Cross multiply
    707,040.54x = 975,737.91 × 401,129.82
  4. Step 4: Simplify right side
    707,040.54x = 391,397,572,205.48
  5. Step 5: Solve for x
    x = 391,397,572,205.48/707,040.54
  6. Step 6: Final answer
    x = 553,571.61

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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.