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Finding the Fourth Proportional to 693,914.96, 957,638.76 and 421,938.56

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Solution

The fourth proportional to 693,914.96, 957,638.76 and 421,938.56 is: 582,297.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,914.96 : 957,638.76 = 421,938.56 : x
  2. Step 2: Convert to fraction form
    693,914.96/957,638.76 = 421,938.56/x
  3. Step 3: Cross multiply
    693,914.96x = 957,638.76 × 421,938.56
  4. Step 4: Simplify right side
    693,914.96x = 404,064,719,394.59
  5. Step 5: Solve for x
    x = 404,064,719,394.59/693,914.96
  6. Step 6: Final answer
    x = 582,297.17

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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.