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Finding the Fourth Proportional to 86,512.32, 119,384.64 and 48,790.08

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Solution

The fourth proportional to 86,512.32, 119,384.64 and 48,790.08 is: 67,328.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,512.32 : 119,384.64 = 48,790.08 : x
  2. Step 2: Convert to fraction form
    86,512.32/119,384.64 = 48,790.08/x
  3. Step 3: Cross multiply
    86,512.32x = 119,384.64 × 48,790.08
  4. Step 4: Simplify right side
    86,512.32x = 5,824,786,136.37
  5. Step 5: Solve for x
    x = 5,824,786,136.37/86,512.32
  6. Step 6: Final answer
    x = 67,328.98

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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.