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Finding the Fourth Proportional to 572,771.20, 859,148.70 and 193,611.10

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Solution

The fourth proportional to 572,771.20, 859,148.70 and 193,611.10 is: 290,413.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,771.20 : 859,148.70 = 193,611.10 : x
  2. Step 2: Convert to fraction form
    572,771.20/859,148.70 = 193,611.10/x
  3. Step 3: Cross multiply
    572,771.20x = 859,148.70 × 193,611.10
  4. Step 4: Simplify right side
    572,771.20x = 166,340,724,870.57
  5. Step 5: Solve for x
    x = 166,340,724,870.57/572,771.20
  6. Step 6: Final answer
    x = 290,413.91

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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.