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Finding the Fourth Proportional to 65,354.94, 89,602.40 and 64,173.96

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Solution

The fourth proportional to 65,354.94, 89,602.40 and 64,173.96 is: 87,983.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,354.94 : 89,602.40 = 64,173.96 : x
  2. Step 2: Convert to fraction form
    65,354.94/89,602.40 = 64,173.96/x
  3. Step 3: Cross multiply
    65,354.94x = 89,602.40 × 64,173.96
  4. Step 4: Simplify right side
    65,354.94x = 5,750,140,512.63
  5. Step 5: Solve for x
    x = 5,750,140,512.63/65,354.94
  6. Step 6: Final answer
    x = 87,983.26

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.