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Finding the Fourth Proportional to 60,413.76, 90,580.56 and 28,828.68

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Solution

The fourth proportional to 60,413.76, 90,580.56 and 28,828.68 is: 43,223.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,413.76 : 90,580.56 = 28,828.68 : x
  2. Step 2: Convert to fraction form
    60,413.76/90,580.56 = 28,828.68/x
  3. Step 3: Cross multiply
    60,413.76x = 90,580.56 × 28,828.68
  4. Step 4: Simplify right side
    60,413.76x = 2,611,317,978.46
  5. Step 5: Solve for x
    x = 2,611,317,978.46/60,413.76
  6. Step 6: Final answer
    x = 43,223.89

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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.