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Finding the Fourth Proportional to 560,763.30, 773,749.83 and 319,031.76

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Solution

The fourth proportional to 560,763.30, 773,749.83 and 319,031.76 is: 440,204.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,763.30 : 773,749.83 = 319,031.76 : x
  2. Step 2: Convert to fraction form
    560,763.30/773,749.83 = 319,031.76/x
  3. Step 3: Cross multiply
    560,763.30x = 773,749.83 × 319,031.76
  4. Step 4: Simplify right side
    560,763.30x = 246,850,770,064.60
  5. Step 5: Solve for x
    x = 246,850,770,064.60/560,763.30
  6. Step 6: Final answer
    x = 440,204.93

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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.