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Finding the Fourth Proportional to 639,988.22, 883,174.77 and 349,596.33

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Solution

The fourth proportional to 639,988.22, 883,174.77 and 349,596.33 is: 482,438.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,988.22 : 883,174.77 = 349,596.33 : x
  2. Step 2: Convert to fraction form
    639,988.22/883,174.77 = 349,596.33/x
  3. Step 3: Cross multiply
    639,988.22x = 883,174.77 × 349,596.33
  4. Step 4: Simplify right side
    639,988.22x = 308,754,658,800.55
  5. Step 5: Solve for x
    x = 308,754,658,800.55/639,988.22
  6. Step 6: Final answer
    x = 482,438.04

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1.5x scale

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.