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Finding the Fourth Proportional to 64,994.40, 89,734.08 and 53,086.32

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Solution

The fourth proportional to 64,994.40, 89,734.08 and 53,086.32 is: 73,293.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,994.40 : 89,734.08 = 53,086.32 : x
  2. Step 2: Convert to fraction form
    64,994.40/89,734.08 = 53,086.32/x
  3. Step 3: Cross multiply
    64,994.40x = 89,734.08 × 53,086.32
  4. Step 4: Simplify right side
    64,994.40x = 4,763,652,085.79
  5. Step 5: Solve for x
    x = 4,763,652,085.79/64,994.40
  6. Step 6: Final answer
    x = 73,293.27

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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.