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Finding the Fourth Proportional to 46,791.20, 70,186.80 and 18,724.70

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Solution

The fourth proportional to 46,791.20, 70,186.80 and 18,724.70 is: 28,087.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,791.20 : 70,186.80 = 18,724.70 : x
  2. Step 2: Convert to fraction form
    46,791.20/70,186.80 = 18,724.70/x
  3. Step 3: Cross multiply
    46,791.20x = 70,186.80 × 18,724.70
  4. Step 4: Simplify right side
    46,791.20x = 1,314,226,773.96
  5. Step 5: Solve for x
    x = 1,314,226,773.96/46,791.20
  6. Step 6: Final answer
    x = 28,087.05

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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.