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Finding the Fourth Proportional to 693,769.37, 957,408.84 and 387,862.74

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Solution

The fourth proportional to 693,769.37, 957,408.84 and 387,862.74 is: 535,254.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,769.37 : 957,408.84 = 387,862.74 : x
  2. Step 2: Convert to fraction form
    693,769.37/957,408.84 = 387,862.74/x
  3. Step 3: Cross multiply
    693,769.37x = 957,408.84 × 387,862.74
  4. Step 4: Simplify right side
    693,769.37x = 371,343,215,982.62
  5. Step 5: Solve for x
    x = 371,343,215,982.62/693,769.37
  6. Step 6: Final answer
    x = 535,254.56

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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.