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Finding the Fourth Proportional to 46,661.75, 70,021.65 and 18,959.75

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Solution

The fourth proportional to 46,661.75, 70,021.65 and 18,959.75 is: 28,451.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,661.75 : 70,021.65 = 18,959.75 : x
  2. Step 2: Convert to fraction form
    46,661.75/70,021.65 = 18,959.75/x
  3. Step 3: Cross multiply
    46,661.75x = 70,021.65 × 18,959.75
  4. Step 4: Simplify right side
    46,661.75x = 1,327,592,628.48
  5. Step 5: Solve for x
    x = 1,327,592,628.48/46,661.75
  6. Step 6: Final answer
    x = 28,451.41

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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.