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Finding the Fourth Proportional to 45,320.40, 67,980.60 and 37,993.95

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Solution

The fourth proportional to 45,320.40, 67,980.60 and 37,993.95 is: 56,990.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,320.40 : 67,980.60 = 37,993.95 : x
  2. Step 2: Convert to fraction form
    45,320.40/67,980.60 = 37,993.95/x
  3. Step 3: Cross multiply
    45,320.40x = 67,980.60 × 37,993.95
  4. Step 4: Simplify right side
    45,320.40x = 2,582,851,517.37
  5. Step 5: Solve for x
    x = 2,582,851,517.37/45,320.40
  6. Step 6: Final answer
    x = 56,990.93

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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.