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Finding the Fourth Proportional to 312,606.41, 431,413.63 and 176,646.08

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Solution

The fourth proportional to 312,606.41, 431,413.63 and 176,646.08 is: 243,781.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,606.41 : 431,413.63 = 176,646.08 : x
  2. Step 2: Convert to fraction form
    312,606.41/431,413.63 = 176,646.08/x
  3. Step 3: Cross multiply
    312,606.41x = 431,413.63 × 176,646.08
  4. Step 4: Simplify right side
    312,606.41x = 76,207,527,234.99
  5. Step 5: Solve for x
    x = 76,207,527,234.99/312,606.41
  6. Step 6: Final answer
    x = 243,781.08

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.