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Finding the Fourth Proportional to 572,702.86, 790,725.33 and 357,939.46

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Solution

The fourth proportional to 572,702.86, 790,725.33 and 357,939.46 is: 494,203.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,702.86 : 790,725.33 = 357,939.46 : x
  2. Step 2: Convert to fraction form
    572,702.86/790,725.33 = 357,939.46/x
  3. Step 3: Cross multiply
    572,702.86x = 790,725.33 × 357,939.46
  4. Step 4: Simplify right side
    572,702.86x = 283,031,797,628.52
  5. Step 5: Solve for x
    x = 283,031,797,628.52/572,702.86
  6. Step 6: Final answer
    x = 494,203.57

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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.