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Finding the Fourth Proportional to 46,012.80, 69,020.73 and 12,730.08

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Solution

The fourth proportional to 46,012.80, 69,020.73 and 12,730.08 is: 19,095.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,012.80 : 69,020.73 = 12,730.08 : x
  2. Step 2: Convert to fraction form
    46,012.80/69,020.73 = 12,730.08/x
  3. Step 3: Cross multiply
    46,012.80x = 69,020.73 × 12,730.08
  4. Step 4: Simplify right side
    46,012.80x = 878,639,273.83
  5. Step 5: Solve for x
    x = 878,639,273.83/46,012.80
  6. Step 6: Final answer
    x = 19,095.54

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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.