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Finding the Fourth Proportional to 97,836.40, 146,908.20 and 56,364.40

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Solution

The fourth proportional to 97,836.40, 146,908.20 and 56,364.40 is: 84,635.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,836.40 : 146,908.20 = 56,364.40 : x
  2. Step 2: Convert to fraction form
    97,836.40/146,908.20 = 56,364.40/x
  3. Step 3: Cross multiply
    97,836.40x = 146,908.20 × 56,364.40
  4. Step 4: Simplify right side
    97,836.40x = 8,280,392,548.08
  5. Step 5: Solve for x
    x = 8,280,392,548.08/97,836.40
  6. Step 6: Final answer
    x = 84,635.09

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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.