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Finding the Fourth Proportional to 122,395.51, 183,466.95 and 51,359.40

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Solution

The fourth proportional to 122,395.51, 183,466.95 and 51,359.40 is: 76,986.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,395.51 : 183,466.95 = 51,359.40 : x
  2. Step 2: Convert to fraction form
    122,395.51/183,466.95 = 51,359.40/x
  3. Step 3: Cross multiply
    122,395.51x = 183,466.95 × 51,359.40
  4. Step 4: Simplify right side
    122,395.51x = 9,422,751,554.50
  5. Step 5: Solve for x
    x = 9,422,751,554.50/122,395.51
  6. Step 6: Final answer
    x = 76,986.09

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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.