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Finding the Fourth Proportional to 98,492.40, 147,519.90 and 76,233.60

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Solution

The fourth proportional to 98,492.40, 147,519.90 and 76,233.60 is: 114,181.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,492.40 : 147,519.90 = 76,233.60 : x
  2. Step 2: Convert to fraction form
    98,492.40/147,519.90 = 76,233.60/x
  3. Step 3: Cross multiply
    98,492.40x = 147,519.90 × 76,233.60
  4. Step 4: Simplify right side
    98,492.40x = 11,245,973,048.64
  5. Step 5: Solve for x
    x = 11,245,973,048.64/98,492.40
  6. Step 6: Final answer
    x = 114,181.13

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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.