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Finding the Fourth Proportional to 665,188.54, 917,958.63 and 363,384.70

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Solution

The fourth proportional to 665,188.54, 917,958.63 and 363,384.70 is: 501,470.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,188.54 : 917,958.63 = 363,384.70 : x
  2. Step 2: Convert to fraction form
    665,188.54/917,958.63 = 363,384.70/x
  3. Step 3: Cross multiply
    665,188.54x = 917,958.63 × 363,384.70
  4. Step 4: Simplify right side
    665,188.54x = 333,572,121,374.96
  5. Step 5: Solve for x
    x = 333,572,121,374.96/665,188.54
  6. Step 6: Final answer
    x = 501,470.04

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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.