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Finding the Fourth Proportional to 472,927.20, 707,342.80 and 423,365.60

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Solution

The fourth proportional to 472,927.20, 707,342.80 and 423,365.60 is: 633,215.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,927.20 : 707,342.80 = 423,365.60 : x
  2. Step 2: Convert to fraction form
    472,927.20/707,342.80 = 423,365.60/x
  3. Step 3: Cross multiply
    472,927.20x = 707,342.80 × 423,365.60
  4. Step 4: Simplify right side
    472,927.20x = 299,464,608,927.68
  5. Step 5: Solve for x
    x = 299,464,608,927.68/472,927.20
  6. Step 6: Final answer
    x = 633,215.03

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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.