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Finding the Fourth Proportional to 74,460.40, 111,690.60 and 71,004.40

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Solution

The fourth proportional to 74,460.40, 111,690.60 and 71,004.40 is: 106,506.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,460.40 : 111,690.60 = 71,004.40 : x
  2. Step 2: Convert to fraction form
    74,460.40/111,690.60 = 71,004.40/x
  3. Step 3: Cross multiply
    74,460.40x = 111,690.60 × 71,004.40
  4. Step 4: Simplify right side
    74,460.40x = 7,930,524,038.64
  5. Step 5: Solve for x
    x = 7,930,524,038.64/74,460.40
  6. Step 6: Final answer
    x = 106,506.60

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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.