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Finding the Fourth Proportional to 379,172.16, 568,720.44 and 98,689.44

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Solution

The fourth proportional to 379,172.16, 568,720.44 and 98,689.44 is: 148,024.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,172.16 : 568,720.44 = 98,689.44 : x
  2. Step 2: Convert to fraction form
    379,172.16/568,720.44 = 98,689.44/x
  3. Step 3: Cross multiply
    379,172.16x = 568,720.44 × 98,689.44
  4. Step 4: Simplify right side
    379,172.16x = 56,126,701,740.15
  5. Step 5: Solve for x
    x = 56,126,701,740.15/379,172.16
  6. Step 6: Final answer
    x = 148,024.32

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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.