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Finding the Fourth Proportional to 515,069.88, 710,783.22 and 285,623.52

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Solution

The fourth proportional to 515,069.88, 710,783.22 and 285,623.52 is: 394,153.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,069.88 : 710,783.22 = 285,623.52 : x
  2. Step 2: Convert to fraction form
    515,069.88/710,783.22 = 285,623.52/x
  3. Step 3: Cross multiply
    515,069.88x = 710,783.22 × 285,623.52
  4. Step 4: Simplify right side
    515,069.88x = 203,016,405,253.33
  5. Step 5: Solve for x
    x = 203,016,405,253.33/515,069.88
  6. Step 6: Final answer
    x = 394,153.13

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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.