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Finding the Fourth Proportional to 64,972.61, 89,662.19 and 35,164.61

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Solution

The fourth proportional to 64,972.61, 89,662.19 and 35,164.61 is: 48,527.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,972.61 : 89,662.19 = 35,164.61 : x
  2. Step 2: Convert to fraction form
    64,972.61/89,662.19 = 35,164.61/x
  3. Step 3: Cross multiply
    64,972.61x = 89,662.19 × 35,164.61
  4. Step 4: Simplify right side
    64,972.61x = 3,152,935,318.96
  5. Step 5: Solve for x
    x = 3,152,935,318.96/64,972.61
  6. Step 6: Final answer
    x = 48,527.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.