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Finding the Fourth Proportional to 5,446,643.70, 8,169,965.55 and 3,620,061.30

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Solution

The fourth proportional to 5,446,643.70, 8,169,965.55 and 3,620,061.30 is: 5,430,091.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,446,643.70 : 8,169,965.55 = 3,620,061.30 : x
  2. Step 2: Convert to fraction form
    5,446,643.70/8,169,965.55 = 3,620,061.30/x
  3. Step 3: Cross multiply
    5,446,643.70x = 8,169,965.55 × 3,620,061.30
  4. Step 4: Simplify right side
    5,446,643.70x = 29,575,776,109,888.21
  5. Step 5: Solve for x
    x = 29,575,776,109,888.21/5,446,643.70
  6. Step 6: Final answer
    x = 5,430,091.95

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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.