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Finding the Fourth Proportional to 515,156.54, 710,905.44 and 285,676.80

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Solution

The fourth proportional to 515,156.54, 710,905.44 and 285,676.80 is: 394,228.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,156.54 : 710,905.44 = 285,676.80 : x
  2. Step 2: Convert to fraction form
    515,156.54/710,905.44 = 285,676.80/x
  3. Step 3: Cross multiply
    515,156.54x = 710,905.44 × 285,676.80
  4. Step 4: Simplify right side
    515,156.54x = 203,089,191,004.01
  5. Step 5: Solve for x
    x = 203,089,191,004.01/515,156.54
  6. Step 6: Final answer
    x = 394,228.11

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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.