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Finding the Fourth Proportional to 631,361.84, 951,305.15 and 521,503.36

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Solution

The fourth proportional to 631,361.84, 951,305.15 and 521,503.36 is: 785,775.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,361.84 : 951,305.15 = 521,503.36 : x
  2. Step 2: Convert to fraction form
    631,361.84/951,305.15 = 521,503.36/x
  3. Step 3: Cross multiply
    631,361.84x = 951,305.15 × 521,503.36
  4. Step 4: Simplify right side
    631,361.84x = 496,108,832,110.30
  5. Step 5: Solve for x
    x = 496,108,832,110.30/631,361.84
  6. Step 6: Final answer
    x = 785,775.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.