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Finding the Fourth Proportional to 995.67, 1,492.22 and 556.91

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Solution

The fourth proportional to 995.67, 1,492.22 and 556.91 is: 834.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.67 : 1,492.22 = 556.91 : x
  2. Step 2: Convert to fraction form
    995.67/1,492.22 = 556.91/x
  3. Step 3: Cross multiply
    995.67x = 1,492.22 × 556.91
  4. Step 4: Simplify right side
    995.67x = 831,031.77
  5. Step 5: Solve for x
    x = 831,031.77/995.67
  6. Step 6: Final answer
    x = 834.65

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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.