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Finding the Fourth Proportional to 665,161.92, 917,923.47 and 363,355.92

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Solution

The fourth proportional to 665,161.92, 917,923.47 and 363,355.92 is: 501,431.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,161.92 : 917,923.47 = 363,355.92 : x
  2. Step 2: Convert to fraction form
    665,161.92/917,923.47 = 363,355.92/x
  3. Step 3: Cross multiply
    665,161.92x = 917,923.47 × 363,355.92
  4. Step 4: Simplify right side
    665,161.92x = 333,532,926,931.44
  5. Step 5: Solve for x
    x = 333,532,926,931.44/665,161.92
  6. Step 6: Final answer
    x = 501,431.18

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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.