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Finding the Fourth Proportional to 69,894.72, 104,334.53 and 64,690.74

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Solution

The fourth proportional to 69,894.72, 104,334.53 and 64,690.74 is: 96,566.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,894.72 : 104,334.53 = 64,690.74 : x
  2. Step 2: Convert to fraction form
    69,894.72/104,334.53 = 64,690.74/x
  3. Step 3: Cross multiply
    69,894.72x = 104,334.53 × 64,690.74
  4. Step 4: Simplify right side
    69,894.72x = 6,749,477,629.80
  5. Step 5: Solve for x
    x = 6,749,477,629.80/69,894.72
  6. Step 6: Final answer
    x = 96,566.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.