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Finding the Fourth Proportional to 519,881.21, 717,355.17 and 293,521.85

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Solution

The fourth proportional to 519,881.21, 717,355.17 and 293,521.85 is: 405,014.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,881.21 : 717,355.17 = 293,521.85 : x
  2. Step 2: Convert to fraction form
    519,881.21/717,355.17 = 293,521.85/x
  3. Step 3: Cross multiply
    519,881.21x = 717,355.17 × 293,521.85
  4. Step 4: Simplify right side
    519,881.21x = 210,559,413,018.69
  5. Step 5: Solve for x
    x = 210,559,413,018.69/519,881.21
  6. Step 6: Final answer
    x = 405,014.47

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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.