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Finding the Fourth Proportional to 46,210.54, 69,315.81 and 18,143.81

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Solution

The fourth proportional to 46,210.54, 69,315.81 and 18,143.81 is: 27,215.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,210.54 : 69,315.81 = 18,143.81 : x
  2. Step 2: Convert to fraction form
    46,210.54/69,315.81 = 18,143.81/x
  3. Step 3: Cross multiply
    46,210.54x = 69,315.81 × 18,143.81
  4. Step 4: Simplify right side
    46,210.54x = 1,257,652,886.64
  5. Step 5: Solve for x
    x = 1,257,652,886.64/46,210.54
  6. Step 6: Final answer
    x = 27,215.72

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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.