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Finding the Fourth Proportional to 122,435.10, 183,609.45 and 43,551.90

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Solution

The fourth proportional to 122,435.10, 183,609.45 and 43,551.90 is: 65,312.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,435.10 : 183,609.45 = 43,551.90 : x
  2. Step 2: Convert to fraction form
    122,435.10/183,609.45 = 43,551.90/x
  3. Step 3: Cross multiply
    122,435.10x = 183,609.45 × 43,551.90
  4. Step 4: Simplify right side
    122,435.10x = 7,996,540,405.46
  5. Step 5: Solve for x
    x = 7,996,540,405.46/122,435.10
  6. Step 6: Final answer
    x = 65,312.48

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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.