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Finding the Fourth Proportional to 622,643.90, 933,965.85 and 622,643.90

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Solution

The fourth proportional to 622,643.90, 933,965.85 and 622,643.90 is: 933,965.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,643.90 : 933,965.85 = 622,643.90 : x
  2. Step 2: Convert to fraction form
    622,643.90/933,965.85 = 622,643.90/x
  3. Step 3: Cross multiply
    622,643.90x = 933,965.85 × 622,643.90
  4. Step 4: Simplify right side
    622,643.90x = 581,528,139,310.82
  5. Step 5: Solve for x
    x = 581,528,139,310.82/622,643.90
  6. Step 6: Final answer
    x = 933,965.85

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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.