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Finding the Fourth Proportional to 995.76, 1,492.72 and 671.24

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Solution

The fourth proportional to 995.76, 1,492.72 and 671.24 is: 1,006.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.76 : 1,492.72 = 671.24 : x
  2. Step 2: Convert to fraction form
    995.76/1,492.72 = 671.24/x
  3. Step 3: Cross multiply
    995.76x = 1,492.72 × 671.24
  4. Step 4: Simplify right side
    995.76x = 1,001,973.37
  5. Step 5: Solve for x
    x = 1,001,973.37/995.76
  6. Step 6: Final answer
    x = 1,006.24

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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.