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Finding the Fourth Proportional to 65,802.63, 90,725.34 and 54,916.44

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Solution

The fourth proportional to 65,802.63, 90,725.34 and 54,916.44 is: 75,716.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,802.63 : 90,725.34 = 54,916.44 : x
  2. Step 2: Convert to fraction form
    65,802.63/90,725.34 = 54,916.44/x
  3. Step 3: Cross multiply
    65,802.63x = 90,725.34 × 54,916.44
  4. Step 4: Simplify right side
    65,802.63x = 4,982,312,690.59
  5. Step 5: Solve for x
    x = 4,982,312,690.59/65,802.63
  6. Step 6: Final answer
    x = 75,716.01

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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.