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Finding the Fourth Proportional to 574,484.20, 792,739.20 and 319,859.08

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Solution

The fourth proportional to 574,484.20, 792,739.20 and 319,859.08 is: 441,378.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,484.20 : 792,739.20 = 319,859.08 : x
  2. Step 2: Convert to fraction form
    574,484.20/792,739.20 = 319,859.08/x
  3. Step 3: Cross multiply
    574,484.20x = 792,739.20 × 319,859.08
  4. Step 4: Simplify right side
    574,484.20x = 253,564,830,409.56
  5. Step 5: Solve for x
    x = 253,564,830,409.56/574,484.20
  6. Step 6: Final answer
    x = 441,378.25

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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.