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Finding the Fourth Proportional to 122,366.88, 183,602.16 and 66,898.08

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Solution

The fourth proportional to 122,366.88, 183,602.16 and 66,898.08 is: 100,375.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,366.88 : 183,602.16 = 66,898.08 : x
  2. Step 2: Convert to fraction form
    122,366.88/183,602.16 = 66,898.08/x
  3. Step 3: Cross multiply
    122,366.88x = 183,602.16 × 66,898.08
  4. Step 4: Simplify right side
    122,366.88x = 12,282,631,987.85
  5. Step 5: Solve for x
    x = 12,282,631,987.85/122,366.88
  6. Step 6: Final answer
    x = 100,375.46

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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.