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Finding the Fourth Proportional to 82,817.70, 124,117.20 and 73,413.60

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Solution

The fourth proportional to 82,817.70, 124,117.20 and 73,413.60 is: 110,023.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,817.70 : 124,117.20 = 73,413.60 : x
  2. Step 2: Convert to fraction form
    82,817.70/124,117.20 = 73,413.60/x
  3. Step 3: Cross multiply
    82,817.70x = 124,117.20 × 73,413.60
  4. Step 4: Simplify right side
    82,817.70x = 9,111,890,473.92
  5. Step 5: Solve for x
    x = 9,111,890,473.92/82,817.70
  6. Step 6: Final answer
    x = 110,023.47

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1.5x scale

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.