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Finding the Fourth Proportional to 46,661.66, 70,021.51 and 18,959.66

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Solution

The fourth proportional to 46,661.66, 70,021.51 and 18,959.66 is: 28,451.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,661.66 : 70,021.51 = 18,959.66 : x
  2. Step 2: Convert to fraction form
    46,661.66/70,021.51 = 18,959.66/x
  3. Step 3: Cross multiply
    46,661.66x = 70,021.51 × 18,959.66
  4. Step 4: Simplify right side
    46,661.66x = 1,327,583,624.78
  5. Step 5: Solve for x
    x = 1,327,583,624.78/46,661.66
  6. Step 6: Final answer
    x = 28,451.28

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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.