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Finding the Fourth Proportional to 619,370.70, 929,056.05 and 554,416.80

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Solution

The fourth proportional to 619,370.70, 929,056.05 and 554,416.80 is: 831,625.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,370.70 : 929,056.05 = 554,416.80 : x
  2. Step 2: Convert to fraction form
    619,370.70/929,056.05 = 554,416.80/x
  3. Step 3: Cross multiply
    619,370.70x = 929,056.05 × 554,416.80
  4. Step 4: Simplify right side
    619,370.70x = 515,084,282,261.64
  5. Step 5: Solve for x
    x = 515,084,282,261.64/619,370.70
  6. Step 6: Final answer
    x = 831,625.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.