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Finding the Fourth Proportional to 130,681.54, 196,109.70 and 55,819.18

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Solution

The fourth proportional to 130,681.54, 196,109.70 and 55,819.18 is: 83,766.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,681.54 : 196,109.70 = 55,819.18 : x
  2. Step 2: Convert to fraction form
    130,681.54/196,109.70 = 55,819.18/x
  3. Step 3: Cross multiply
    130,681.54x = 196,109.70 × 55,819.18
  4. Step 4: Simplify right side
    130,681.54x = 10,946,682,644.05
  5. Step 5: Solve for x
    x = 10,946,682,644.05/130,681.54
  6. Step 6: Final answer
    x = 83,766.10

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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.