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Finding the Fourth Proportional to 1,281,729.03, 1,923,749.15 and 683,188.71

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Solution

The fourth proportional to 1,281,729.03, 1,923,749.15 and 683,188.71 is: 1,025,399.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,729.03 : 1,923,749.15 = 683,188.71 : x
  2. Step 2: Convert to fraction form
    1,281,729.03/1,923,749.15 = 683,188.71/x
  3. Step 3: Cross multiply
    1,281,729.03x = 1,923,749.15 × 683,188.71
  4. Step 4: Simplify right side
    1,281,729.03x = 1,314,283,696,736.15
  5. Step 5: Solve for x
    x = 1,314,283,696,736.15/1,281,729.03
  6. Step 6: Final answer
    x = 1,025,399.02

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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.