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Finding the Fourth Proportional to 28,554.92, 42,832.38 and 9,835.42

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Solution

The fourth proportional to 28,554.92, 42,832.38 and 9,835.42 is: 14,753.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,554.92 : 42,832.38 = 9,835.42 : x
  2. Step 2: Convert to fraction form
    28,554.92/42,832.38 = 9,835.42/x
  3. Step 3: Cross multiply
    28,554.92x = 42,832.38 × 9,835.42
  4. Step 4: Simplify right side
    28,554.92x = 421,274,446.90
  5. Step 5: Solve for x
    x = 421,274,446.90/28,554.92
  6. Step 6: Final answer
    x = 14,753.13

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1.5x scale

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.