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Finding the Fourth Proportional to 122,445.80, 183,668.70 and 104,731.10

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Solution

The fourth proportional to 122,445.80, 183,668.70 and 104,731.10 is: 157,096.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,445.80 : 183,668.70 = 104,731.10 : x
  2. Step 2: Convert to fraction form
    122,445.80/183,668.70 = 104,731.10/x
  3. Step 3: Cross multiply
    122,445.80x = 183,668.70 × 104,731.10
  4. Step 4: Simplify right side
    122,445.80x = 19,235,824,986.57
  5. Step 5: Solve for x
    x = 19,235,824,986.57/122,445.80
  6. Step 6: Final answer
    x = 157,096.65

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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.