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Finding the Fourth Proportional to 98,907.50, 136,492.35 and 54,194.54

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Solution

The fourth proportional to 98,907.50, 136,492.35 and 54,194.54 is: 74,788.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,907.50 : 136,492.35 = 54,194.54 : x
  2. Step 2: Convert to fraction form
    98,907.50/136,492.35 = 54,194.54/x
  3. Step 3: Cross multiply
    98,907.50x = 136,492.35 × 54,194.54
  4. Step 4: Simplify right side
    98,907.50x = 7,397,140,121.77
  5. Step 5: Solve for x
    x = 7,397,140,121.77/98,907.50
  6. Step 6: Final answer
    x = 74,788.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.