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Finding the Fourth Proportional to 46,254.70, 69,361.53 and 21,288.70

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Solution

The fourth proportional to 46,254.70, 69,361.53 and 21,288.70 is: 31,923.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,254.70 : 69,361.53 = 21,288.70 : x
  2. Step 2: Convert to fraction form
    46,254.70/69,361.53 = 21,288.70/x
  3. Step 3: Cross multiply
    46,254.70x = 69,361.53 × 21,288.70
  4. Step 4: Simplify right side
    46,254.70x = 1,476,616,803.71
  5. Step 5: Solve for x
    x = 1,476,616,803.71/46,254.70
  6. Step 6: Final answer
    x = 31,923.61

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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.