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Finding the Fourth Proportional to 143,857.68, 198,615.84 and 92,893.20

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Solution

The fourth proportional to 143,857.68, 198,615.84 and 92,893.20 is: 128,252.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,857.68 : 198,615.84 = 92,893.20 : x
  2. Step 2: Convert to fraction form
    143,857.68/198,615.84 = 92,893.20/x
  3. Step 3: Cross multiply
    143,857.68x = 198,615.84 × 92,893.20
  4. Step 4: Simplify right side
    143,857.68x = 18,450,060,948.29
  5. Step 5: Solve for x
    x = 18,450,060,948.29/143,857.68
  6. Step 6: Final answer
    x = 128,252.18

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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.