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Finding the Fourth Proportional to 665,866.85, 999,511.04 and 286,974.56

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Solution

The fourth proportional to 665,866.85, 999,511.04 and 286,974.56 is: 430,768.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,866.85 : 999,511.04 = 286,974.56 : x
  2. Step 2: Convert to fraction form
    665,866.85/999,511.04 = 286,974.56/x
  3. Step 3: Cross multiply
    665,866.85x = 999,511.04 × 286,974.56
  4. Step 4: Simplify right side
    665,866.85x = 286,834,241,983.05
  5. Step 5: Solve for x
    x = 286,834,241,983.05/665,866.85
  6. Step 6: Final answer
    x = 430,768.17

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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.