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Finding the Fourth Proportional to 922,493.80, 1,383,611.10 and 291,471.40

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Solution

The fourth proportional to 922,493.80, 1,383,611.10 and 291,471.40 is: 437,166.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,493.80 : 1,383,611.10 = 291,471.40 : x
  2. Step 2: Convert to fraction form
    922,493.80/1,383,611.10 = 291,471.40/x
  3. Step 3: Cross multiply
    922,493.80x = 1,383,611.10 × 291,471.40
  4. Step 4: Simplify right side
    922,493.80x = 403,283,064,372.54
  5. Step 5: Solve for x
    x = 403,283,064,372.54/922,493.80
  6. Step 6: Final answer
    x = 437,166.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.