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Finding the Fourth Proportional to 573,122.28, 859,085.46 and 320,031.72

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Solution

The fourth proportional to 573,122.28, 859,085.46 and 320,031.72 is: 479,713.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,122.28 : 859,085.46 = 320,031.72 : x
  2. Step 2: Convert to fraction form
    573,122.28/859,085.46 = 320,031.72/x
  3. Step 3: Cross multiply
    573,122.28x = 859,085.46 × 320,031.72
  4. Step 4: Simplify right side
    573,122.28x = 274,934,597,390.79
  5. Step 5: Solve for x
    x = 274,934,597,390.79/573,122.28
  6. Step 6: Final answer
    x = 479,713.68

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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.