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Finding the Fourth Proportional to 65,980.41, 90,930.86 and 46,861.02

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Solution

The fourth proportional to 65,980.41, 90,930.86 and 46,861.02 is: 64,581.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,980.41 : 90,930.86 = 46,861.02 : x
  2. Step 2: Convert to fraction form
    65,980.41/90,930.86 = 46,861.02/x
  3. Step 3: Cross multiply
    65,980.41x = 90,930.86 × 46,861.02
  4. Step 4: Simplify right side
    65,980.41x = 4,261,112,614.77
  5. Step 5: Solve for x
    x = 4,261,112,614.77/65,980.41
  6. Step 6: Final answer
    x = 64,581.48

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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.