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Finding the Fourth Proportional to 35,142.92, 48,492.44 and 20,992.76

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Solution

The fourth proportional to 35,142.92, 48,492.44 and 20,992.76 is: 28,967.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,142.92 : 48,492.44 = 20,992.76 : x
  2. Step 2: Convert to fraction form
    35,142.92/48,492.44 = 20,992.76/x
  3. Step 3: Cross multiply
    35,142.92x = 48,492.44 × 20,992.76
  4. Step 4: Simplify right side
    35,142.92x = 1,017,990,154.73
  5. Step 5: Solve for x
    x = 1,017,990,154.73/35,142.92
  6. Step 6: Final answer
    x = 28,967.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.