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Finding the Fourth Proportional to 96,986.40, 145,460.40 and 47,066.40

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Solution

The fourth proportional to 96,986.40, 145,460.40 and 47,066.40 is: 70,590.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,986.40 : 145,460.40 = 47,066.40 : x
  2. Step 2: Convert to fraction form
    96,986.40/145,460.40 = 47,066.40/x
  3. Step 3: Cross multiply
    96,986.40x = 145,460.40 × 47,066.40
  4. Step 4: Simplify right side
    96,986.40x = 6,846,297,370.56
  5. Step 5: Solve for x
    x = 6,846,297,370.56/96,986.40
  6. Step 6: Final answer
    x = 70,590.28

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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.