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Finding the Fourth Proportional to 633,982.56, 874,985.64 and 392,343

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Solution

The fourth proportional to 633,982.56, 874,985.64 and 392,343 is: 541,488.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,982.56 : 874,985.64 = 392,343 : x
  2. Step 2: Convert to fraction form
    633,982.56/874,985.64 = 392,343/x
  3. Step 3: Cross multiply
    633,982.56x = 874,985.64 × 392,343
  4. Step 4: Simplify right side
    633,982.56x = 343,294,490,954.52
  5. Step 5: Solve for x
    x = 343,294,490,954.52/633,982.56
  6. Step 6: Final answer
    x = 541,488.86

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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.