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Finding the Fourth Proportional to 61,202.40, 91,628.40 and 37,670.40

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Solution

The fourth proportional to 61,202.40, 91,628.40 and 37,670.40 is: 56,397.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,202.40 : 91,628.40 = 37,670.40 : x
  2. Step 2: Convert to fraction form
    61,202.40/91,628.40 = 37,670.40/x
  3. Step 3: Cross multiply
    61,202.40x = 91,628.40 × 37,670.40
  4. Step 4: Simplify right side
    61,202.40x = 3,451,678,479.36
  5. Step 5: Solve for x
    x = 3,451,678,479.36/61,202.40
  6. Step 6: Final answer
    x = 56,397.76

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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.