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Finding the Fourth Proportional to 1,263,971.90, 1,895,572.26 and 664,607.90

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Solution

The fourth proportional to 1,263,971.90, 1,895,572.26 and 664,607.90 is: 996,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263,971.90 : 1,895,572.26 = 664,607.90 : x
  2. Step 2: Convert to fraction form
    1,263,971.90/1,895,572.26 = 664,607.90/x
  3. Step 3: Cross multiply
    1,263,971.90x = 1,895,572.26 × 664,607.90
  4. Step 4: Simplify right side
    1,263,971.90x = 1,259,812,289,538.99
  5. Step 5: Solve for x
    x = 1,259,812,289,538.99/1,263,971.90
  6. Step 6: Final answer
    x = 996,709.10

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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.