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Finding the Fourth Proportional to 113,826.80, 170,880.60 and 71,706.80

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Solution

The fourth proportional to 113,826.80, 170,880.60 and 71,706.80 is: 107,648.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,826.80 : 170,880.60 = 71,706.80 : x
  2. Step 2: Convert to fraction form
    113,826.80/170,880.60 = 71,706.80/x
  3. Step 3: Cross multiply
    113,826.80x = 170,880.60 × 71,706.80
  4. Step 4: Simplify right side
    113,826.80x = 12,253,301,008.08
  5. Step 5: Solve for x
    x = 12,253,301,008.08/113,826.80
  6. Step 6: Final answer
    x = 107,648.65

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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.