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Finding the Fourth Proportional to 665,163.78, 917,926.07 and 363,357.78

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Solution

The fourth proportional to 665,163.78, 917,926.07 and 363,357.78 is: 501,433.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,163.78 : 917,926.07 = 363,357.78 : x
  2. Step 2: Convert to fraction form
    665,163.78/917,926.07 = 363,357.78/x
  3. Step 3: Cross multiply
    665,163.78x = 917,926.07 × 363,357.78
  4. Step 4: Simplify right side
    665,163.78x = 333,535,579,907.72
  5. Step 5: Solve for x
    x = 333,535,579,907.72/665,163.78
  6. Step 6: Final answer
    x = 501,433.77

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.