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Finding the Fourth Proportional to 118,263.20, 177,481.20 and 83,271.20

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Solution

The fourth proportional to 118,263.20, 177,481.20 and 83,271.20 is: 124,967.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,263.20 : 177,481.20 = 83,271.20 : x
  2. Step 2: Convert to fraction form
    118,263.20/177,481.20 = 83,271.20/x
  3. Step 3: Cross multiply
    118,263.20x = 177,481.20 × 83,271.20
  4. Step 4: Simplify right side
    118,263.20x = 14,779,072,501.44
  5. Step 5: Solve for x
    x = 14,779,072,501.44/118,263.20
  6. Step 6: Final answer
    x = 124,967.64

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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.