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Finding the Fourth Proportional to 65,558.48, 90,469.79 and 36,875.98

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Solution

The fourth proportional to 65,558.48, 90,469.79 and 36,875.98 is: 50,888.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,558.48 : 90,469.79 = 36,875.98 : x
  2. Step 2: Convert to fraction form
    65,558.48/90,469.79 = 36,875.98/x
  3. Step 3: Cross multiply
    65,558.48x = 90,469.79 × 36,875.98
  4. Step 4: Simplify right side
    65,558.48x = 3,336,161,529.92
  5. Step 5: Solve for x
    x = 3,336,161,529.92/65,558.48
  6. Step 6: Final answer
    x = 50,888.33

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1.5x scale

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.