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Finding the Fourth Proportional to 46,751.50, 70,128.66 and 18,287.31

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Solution

The fourth proportional to 46,751.50, 70,128.66 and 18,287.31 is: 27,431.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,751.50 : 70,128.66 = 18,287.31 : x
  2. Step 2: Convert to fraction form
    46,751.50/70,128.66 = 18,287.31/x
  3. Step 3: Cross multiply
    46,751.50x = 70,128.66 × 18,287.31
  4. Step 4: Simplify right side
    46,751.50x = 1,282,464,545.30
  5. Step 5: Solve for x
    x = 1,282,464,545.30/46,751.50
  6. Step 6: Final answer
    x = 27,431.52

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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.