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Finding the Fourth Proportional to 96,672, 133,407.72 and 56,413.56

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Solution

The fourth proportional to 96,672, 133,407.72 and 56,413.56 is: 77,850.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,672 : 133,407.72 = 56,413.56 : x
  2. Step 2: Convert to fraction form
    96,672/133,407.72 = 56,413.56/x
  3. Step 3: Cross multiply
    96,672x = 133,407.72 × 56,413.56
  4. Step 4: Simplify right side
    96,672x = 7,526,004,416.68
  5. Step 5: Solve for x
    x = 7,526,004,416.68/96,672
  6. Step 6: Final answer
    x = 77,850.92

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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.