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Finding the Fourth Proportional to 98,907.54, 147,937.44 and 91,728.25

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Solution

The fourth proportional to 98,907.54, 147,937.44 and 91,728.25 is: 137,199.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,907.54 : 147,937.44 = 91,728.25 : x
  2. Step 2: Convert to fraction form
    98,907.54/147,937.44 = 91,728.25/x
  3. Step 3: Cross multiply
    98,907.54x = 147,937.44 × 91,728.25
  4. Step 4: Simplify right side
    98,907.54x = 13,570,041,938.85
  5. Step 5: Solve for x
    x = 13,570,041,938.85/98,907.54
  6. Step 6: Final answer
    x = 137,199.27

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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.