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Finding the Fourth Proportional to 445,548.46, 668,055.80 and 141,811.42

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Solution

The fourth proportional to 445,548.46, 668,055.80 and 141,811.42 is: 212,632.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,548.46 : 668,055.80 = 141,811.42 : x
  2. Step 2: Convert to fraction form
    445,548.46/668,055.80 = 141,811.42/x
  3. Step 3: Cross multiply
    445,548.46x = 668,055.80 × 141,811.42
  4. Step 4: Simplify right side
    445,548.46x = 94,737,940,776.54
  5. Step 5: Solve for x
    x = 94,737,940,776.54/445,548.46
  6. Step 6: Final answer
    x = 212,632.18

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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.