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Finding the Fourth Proportional to 74,911.20, 112,291.20 and 37,413.60

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Solution

The fourth proportional to 74,911.20, 112,291.20 and 37,413.60 is: 56,082.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,911.20 : 112,291.20 = 37,413.60 : x
  2. Step 2: Convert to fraction form
    74,911.20/112,291.20 = 37,413.60/x
  3. Step 3: Cross multiply
    74,911.20x = 112,291.20 × 37,413.60
  4. Step 4: Simplify right side
    74,911.20x = 4,201,218,040.32
  5. Step 5: Solve for x
    x = 4,201,218,040.32/74,911.20
  6. Step 6: Final answer
    x = 56,082.64

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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.