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Finding the Fourth Proportional to 122,507.97, 183,515.90 and 55,856.40

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Solution

The fourth proportional to 122,507.97, 183,515.90 and 55,856.40 is: 83,672.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,507.97 : 183,515.90 = 55,856.40 : x
  2. Step 2: Convert to fraction form
    122,507.97/183,515.90 = 55,856.40/x
  3. Step 3: Cross multiply
    122,507.97x = 183,515.90 × 55,856.40
  4. Step 4: Simplify right side
    122,507.97x = 10,250,537,237.48
  5. Step 5: Solve for x
    x = 10,250,537,237.48/122,507.97
  6. Step 6: Final answer
    x = 83,672.41

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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.