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Finding the Fourth Proportional to 622,355.80, 933,648.90 and 201,645.40

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Solution

The fourth proportional to 622,355.80, 933,648.90 and 201,645.40 is: 302,505.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,355.80 : 933,648.90 = 201,645.40 : x
  2. Step 2: Convert to fraction form
    622,355.80/933,648.90 = 201,645.40/x
  3. Step 3: Cross multiply
    622,355.80x = 933,648.90 × 201,645.40
  4. Step 4: Simplify right side
    622,355.80x = 188,266,005,900.06
  5. Step 5: Solve for x
    x = 188,266,005,900.06/622,355.80
  6. Step 6: Final answer
    x = 302,505.43

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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.