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Finding the Fourth Proportional to 236,521.85, 354,829.50 and 86,763.53

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Solution

The fourth proportional to 236,521.85, 354,829.50 and 86,763.53 is: 130,162.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,521.85 : 354,829.50 = 86,763.53 : x
  2. Step 2: Convert to fraction form
    236,521.85/354,829.50 = 86,763.53/x
  3. Step 3: Cross multiply
    236,521.85x = 354,829.50 × 86,763.53
  4. Step 4: Simplify right side
    236,521.85x = 30,786,258,193.99
  5. Step 5: Solve for x
    x = 30,786,258,193.99/236,521.85
  6. Step 6: Final answer
    x = 130,162.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.