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Finding the Fourth Proportional to 642,165.32, 886,202.47 and 366,517.66

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Solution

The fourth proportional to 642,165.32, 886,202.47 and 366,517.66 is: 505,802.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,165.32 : 886,202.47 = 366,517.66 : x
  2. Step 2: Convert to fraction form
    642,165.32/886,202.47 = 366,517.66/x
  3. Step 3: Cross multiply
    642,165.32x = 886,202.47 × 366,517.66
  4. Step 4: Simplify right side
    642,165.32x = 324,808,855,494.89
  5. Step 5: Solve for x
    x = 324,808,855,494.89/642,165.32
  6. Step 6: Final answer
    x = 505,802.55

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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.