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Finding the Fourth Proportional to 64,798.85, 89,423.30 and 36,117.70

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Solution

The fourth proportional to 64,798.85, 89,423.30 and 36,117.70 is: 49,842.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,798.85 : 89,423.30 = 36,117.70 : x
  2. Step 2: Convert to fraction form
    64,798.85/89,423.30 = 36,117.70/x
  3. Step 3: Cross multiply
    64,798.85x = 89,423.30 × 36,117.70
  4. Step 4: Simplify right side
    64,798.85x = 3,229,763,789.15
  5. Step 5: Solve for x
    x = 3,229,763,789.15/64,798.85
  6. Step 6: Final answer
    x = 49,842.92

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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.