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Finding the Fourth Proportional to 94,940.40, 142,432.20 and 55,477.20

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Solution

The fourth proportional to 94,940.40, 142,432.20 and 55,477.20 is: 83,228.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,940.40 : 142,432.20 = 55,477.20 : x
  2. Step 2: Convert to fraction form
    94,940.40/142,432.20 = 55,477.20/x
  3. Step 3: Cross multiply
    94,940.40x = 142,432.20 × 55,477.20
  4. Step 4: Simplify right side
    94,940.40x = 7,901,739,645.84
  5. Step 5: Solve for x
    x = 7,901,739,645.84/94,940.40
  6. Step 6: Final answer
    x = 83,228.42

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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.