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Finding the Fourth Proportional to 143,753.40, 198,274.10 and 92,740.23

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Solution

The fourth proportional to 143,753.40, 198,274.10 and 92,740.23 is: 127,913.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,753.40 : 198,274.10 = 92,740.23 : x
  2. Step 2: Convert to fraction form
    143,753.40/198,274.10 = 92,740.23/x
  3. Step 3: Cross multiply
    143,753.40x = 198,274.10 × 92,740.23
  4. Step 4: Simplify right side
    143,753.40x = 18,387,985,173.34
  5. Step 5: Solve for x
    x = 18,387,985,173.34/143,753.40
  6. Step 6: Final answer
    x = 127,913.39

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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.