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Finding the Fourth Proportional to 113,428.60, 170,142.90 and 97,682.20

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Solution

The fourth proportional to 113,428.60, 170,142.90 and 97,682.20 is: 146,523.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,428.60 : 170,142.90 = 97,682.20 : x
  2. Step 2: Convert to fraction form
    113,428.60/170,142.90 = 97,682.20/x
  3. Step 3: Cross multiply
    113,428.60x = 170,142.90 × 97,682.20
  4. Step 4: Simplify right side
    113,428.60x = 16,619,932,786.38
  5. Step 5: Solve for x
    x = 16,619,932,786.38/113,428.60
  6. Step 6: Final answer
    x = 146,523.30

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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.