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Finding the Fourth Proportional to 46,661.44, 69,992.16 and 18,961.60

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Solution

The fourth proportional to 46,661.44, 69,992.16 and 18,961.60 is: 28,442.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,661.44 : 69,992.16 = 18,961.60 : x
  2. Step 2: Convert to fraction form
    46,661.44/69,992.16 = 18,961.60/x
  3. Step 3: Cross multiply
    46,661.44x = 69,992.16 × 18,961.60
  4. Step 4: Simplify right side
    46,661.44x = 1,327,163,341.06
  5. Step 5: Solve for x
    x = 1,327,163,341.06/46,661.44
  6. Step 6: Final answer
    x = 28,442.40

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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.