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Finding the Fourth Proportional to 104,994.50, 157,491.76 and 31,122.50

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Solution

The fourth proportional to 104,994.50, 157,491.76 and 31,122.50 is: 46,683.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,994.50 : 157,491.76 = 31,122.50 : x
  2. Step 2: Convert to fraction form
    104,994.50/157,491.76 = 31,122.50/x
  3. Step 3: Cross multiply
    104,994.50x = 157,491.76 × 31,122.50
  4. Step 4: Simplify right side
    104,994.50x = 4,901,537,300.60
  5. Step 5: Solve for x
    x = 4,901,537,300.60/104,994.50
  6. Step 6: Final answer
    x = 46,683.75

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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.