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Finding the Fourth Proportional to 113,475.40, 170,213.10 and 30,369.40

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Solution

The fourth proportional to 113,475.40, 170,213.10 and 30,369.40 is: 45,554.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,475.40 : 170,213.10 = 30,369.40 : x
  2. Step 2: Convert to fraction form
    113,475.40/170,213.10 = 30,369.40/x
  3. Step 3: Cross multiply
    113,475.40x = 170,213.10 × 30,369.40
  4. Step 4: Simplify right side
    113,475.40x = 5,169,269,719.14
  5. Step 5: Solve for x
    x = 5,169,269,719.14/113,475.40
  6. Step 6: Final answer
    x = 45,554.10

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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.