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Finding the Fourth Proportional to 91,413.74, 136,899.30 and 63,254.90

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Solution

The fourth proportional to 91,413.74, 136,899.30 and 63,254.90 is: 94,729.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,413.74 : 136,899.30 = 63,254.90 : x
  2. Step 2: Convert to fraction form
    91,413.74/136,899.30 = 63,254.90/x
  3. Step 3: Cross multiply
    91,413.74x = 136,899.30 × 63,254.90
  4. Step 4: Simplify right side
    91,413.74x = 8,659,551,531.57
  5. Step 5: Solve for x
    x = 8,659,551,531.57/91,413.74
  6. Step 6: Final answer
    x = 94,729.21

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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.