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Finding the Fourth Proportional to 79,230.80, 118,846.20 and 34,810.40

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Solution

The fourth proportional to 79,230.80, 118,846.20 and 34,810.40 is: 52,215.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,230.80 : 118,846.20 = 34,810.40 : x
  2. Step 2: Convert to fraction form
    79,230.80/118,846.20 = 34,810.40/x
  3. Step 3: Cross multiply
    79,230.80x = 118,846.20 × 34,810.40
  4. Step 4: Simplify right side
    79,230.80x = 4,137,083,760.48
  5. Step 5: Solve for x
    x = 4,137,083,760.48/79,230.80
  6. Step 6: Final answer
    x = 52,215.60

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1.5x scale

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.