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Finding the Fourth Proportional to 693,561, 957,192.10 and 391,774.44

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Solution

The fourth proportional to 693,561, 957,192.10 and 391,774.44 is: 540,692.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,561 : 957,192.10 = 391,774.44 : x
  2. Step 2: Convert to fraction form
    693,561/957,192.10 = 391,774.44/x
  3. Step 3: Cross multiply
    693,561x = 957,192.10 × 391,774.44
  4. Step 4: Simplify right side
    693,561x = 375,003,398,949.92
  5. Step 5: Solve for x
    x = 375,003,398,949.92/693,561
  6. Step 6: Final answer
    x = 540,692.74

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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.