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Finding the Fourth Proportional to 122,356.35, 183,534.53 and 103,693.95

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Solution

The fourth proportional to 122,356.35, 183,534.53 and 103,693.95 is: 155,540.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,356.35 : 183,534.53 = 103,693.95 : x
  2. Step 2: Convert to fraction form
    122,356.35/183,534.53 = 103,693.95/x
  3. Step 3: Cross multiply
    122,356.35x = 183,534.53 × 103,693.95
  4. Step 4: Simplify right side
    122,356.35x = 19,031,420,377.09
  5. Step 5: Solve for x
    x = 19,031,420,377.09/122,356.35
  6. Step 6: Final answer
    x = 155,540.93

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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.