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Finding the Fourth Proportional to 110,871.75, 152,823.33 and 86,630.34

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Solution

The fourth proportional to 110,871.75, 152,823.33 and 86,630.34 is: 119,409.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,871.75 : 152,823.33 = 86,630.34 : x
  2. Step 2: Convert to fraction form
    110,871.75/152,823.33 = 86,630.34/x
  3. Step 3: Cross multiply
    110,871.75x = 152,823.33 × 86,630.34
  4. Step 4: Simplify right side
    110,871.75x = 13,239,137,037.83
  5. Step 5: Solve for x
    x = 13,239,137,037.83/110,871.75
  6. Step 6: Final answer
    x = 119,409.47

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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.