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Finding the Fourth Proportional to 98,613.70, 147,942.15 and 48,717.70

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Solution

The fourth proportional to 98,613.70, 147,942.15 and 48,717.70 is: 73,087.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,613.70 : 147,942.15 = 48,717.70 : x
  2. Step 2: Convert to fraction form
    98,613.70/147,942.15 = 48,717.70/x
  3. Step 3: Cross multiply
    98,613.70x = 147,942.15 × 48,717.70
  4. Step 4: Simplify right side
    98,613.70x = 7,207,401,281.06
  5. Step 5: Solve for x
    x = 7,207,401,281.06/98,613.70
  6. Step 6: Final answer
    x = 73,087.22

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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.