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Finding the Fourth Proportional to 624,209.58, 935,920.71 and 343,923.66

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Solution

The fourth proportional to 624,209.58, 935,920.71 and 343,923.66 is: 515,668.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,209.58 : 935,920.71 = 343,923.66 : x
  2. Step 2: Convert to fraction form
    624,209.58/935,920.71 = 343,923.66/x
  3. Step 3: Cross multiply
    624,209.58x = 935,920.71 × 343,923.66
  4. Step 4: Simplify right side
    624,209.58x = 321,885,276,053.00
  5. Step 5: Solve for x
    x = 321,885,276,053.00/624,209.58
  6. Step 6: Final answer
    x = 515,668.59

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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.