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Finding the Fourth Proportional to 117,212.81, 175,782.31 and 67,316.40

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Solution

The fourth proportional to 117,212.81, 175,782.31 and 67,316.40 is: 100,953.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,212.81 : 175,782.31 = 67,316.40 : x
  2. Step 2: Convert to fraction form
    117,212.81/175,782.31 = 67,316.40/x
  3. Step 3: Cross multiply
    117,212.81x = 175,782.31 × 67,316.40
  4. Step 4: Simplify right side
    117,212.81x = 11,833,032,292.88
  5. Step 5: Solve for x
    x = 11,833,032,292.88/117,212.81
  6. Step 6: Final answer
    x = 100,953.41

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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.