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Finding the Fourth Proportional to 583,234.80, 872,519.40 and 505,215.60

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Solution

The fourth proportional to 583,234.80, 872,519.40 and 505,215.60 is: 755,802.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,234.80 : 872,519.40 = 505,215.60 : x
  2. Step 2: Convert to fraction form
    583,234.80/872,519.40 = 505,215.60/x
  3. Step 3: Cross multiply
    583,234.80x = 872,519.40 × 505,215.60
  4. Step 4: Simplify right side
    583,234.80x = 440,810,412,182.64
  5. Step 5: Solve for x
    x = 440,810,412,182.64/583,234.80
  6. Step 6: Final answer
    x = 755,802.66

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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.