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Finding the Fourth Proportional to 82,863.80, 124,295.70 and 47,774.60

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Solution

The fourth proportional to 82,863.80, 124,295.70 and 47,774.60 is: 71,661.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,863.80 : 124,295.70 = 47,774.60 : x
  2. Step 2: Convert to fraction form
    82,863.80/124,295.70 = 47,774.60/x
  3. Step 3: Cross multiply
    82,863.80x = 124,295.70 × 47,774.60
  4. Step 4: Simplify right side
    82,863.80x = 5,938,177,349.22
  5. Step 5: Solve for x
    x = 5,938,177,349.22/82,863.80
  6. Step 6: Final answer
    x = 71,661.90

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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.