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Finding the Fourth Proportional to 79,271.80, 118,907.70 and 34,851.40

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Solution

The fourth proportional to 79,271.80, 118,907.70 and 34,851.40 is: 52,277.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,271.80 : 118,907.70 = 34,851.40 : x
  2. Step 2: Convert to fraction form
    79,271.80/118,907.70 = 34,851.40/x
  3. Step 3: Cross multiply
    79,271.80x = 118,907.70 × 34,851.40
  4. Step 4: Simplify right side
    79,271.80x = 4,144,099,815.78
  5. Step 5: Solve for x
    x = 4,144,099,815.78/79,271.80
  6. Step 6: Final answer
    x = 52,277.10

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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.