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Finding the Fourth Proportional to 693,524.16, 957,015 and 391,659.84

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Solution

The fourth proportional to 693,524.16, 957,015 and 391,659.84 is: 540,463.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,524.16 : 957,015 = 391,659.84 : x
  2. Step 2: Convert to fraction form
    693,524.16/957,015 = 391,659.84/x
  3. Step 3: Cross multiply
    693,524.16x = 957,015 × 391,659.84
  4. Step 4: Simplify right side
    693,524.16x = 374,824,341,777.60
  5. Step 5: Solve for x
    x = 374,824,341,777.60/693,524.16
  6. Step 6: Final answer
    x = 540,463.28

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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.