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Finding the Fourth Proportional to 46,812.87, 70,211.70 and 21,855.51

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Solution

The fourth proportional to 46,812.87, 70,211.70 and 21,855.51 is: 32,779.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,812.87 : 70,211.70 = 21,855.51 : x
  2. Step 2: Convert to fraction form
    46,812.87/70,211.70 = 21,855.51/x
  3. Step 3: Cross multiply
    46,812.87x = 70,211.70 × 21,855.51
  4. Step 4: Simplify right side
    46,812.87x = 1,534,512,511.47
  5. Step 5: Solve for x
    x = 1,534,512,511.47/46,812.87
  6. Step 6: Final answer
    x = 32,779.71

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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.