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Finding the Fourth Proportional to 64,982.94, 89,690.67 and 41,141.40

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Solution

The fourth proportional to 64,982.94, 89,690.67 and 41,141.40 is: 56,784.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,982.94 : 89,690.67 = 41,141.40 : x
  2. Step 2: Convert to fraction form
    64,982.94/89,690.67 = 41,141.40/x
  3. Step 3: Cross multiply
    64,982.94x = 89,690.67 × 41,141.40
  4. Step 4: Simplify right side
    64,982.94x = 3,689,999,730.74
  5. Step 5: Solve for x
    x = 3,689,999,730.74/64,982.94
  6. Step 6: Final answer
    x = 56,784.13

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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.