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Finding the Fourth Proportional to 496,840.11, 745,430.27 and 212,413.47

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Solution

The fourth proportional to 496,840.11, 745,430.27 and 212,413.47 is: 318,692.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,840.11 : 745,430.27 = 212,413.47 : x
  2. Step 2: Convert to fraction form
    496,840.11/745,430.27 = 212,413.47/x
  3. Step 3: Cross multiply
    496,840.11x = 745,430.27 × 212,413.47
  4. Step 4: Simplify right side
    496,840.11x = 158,339,429,231.67
  5. Step 5: Solve for x
    x = 158,339,429,231.67/496,840.11
  6. Step 6: Final answer
    x = 318,692.93

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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.