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Finding the Fourth Proportional to 60,701.80, 91,052.70 and 39,706.60

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Solution

The fourth proportional to 60,701.80, 91,052.70 and 39,706.60 is: 59,559.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,701.80 : 91,052.70 = 39,706.60 : x
  2. Step 2: Convert to fraction form
    60,701.80/91,052.70 = 39,706.60/x
  3. Step 3: Cross multiply
    60,701.80x = 91,052.70 × 39,706.60
  4. Step 4: Simplify right side
    60,701.80x = 3,615,393,137.82
  5. Step 5: Solve for x
    x = 3,615,393,137.82/60,701.80
  6. Step 6: Final answer
    x = 59,559.90

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Similar ratio
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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.