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Finding the Fourth Proportional to 171,683.60, 257,525.40 and 87,702.80

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Solution

The fourth proportional to 171,683.60, 257,525.40 and 87,702.80 is: 131,554.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,683.60 : 257,525.40 = 87,702.80 : x
  2. Step 2: Convert to fraction form
    171,683.60/257,525.40 = 87,702.80/x
  3. Step 3: Cross multiply
    171,683.60x = 257,525.40 × 87,702.80
  4. Step 4: Simplify right side
    171,683.60x = 22,585,698,651.12
  5. Step 5: Solve for x
    x = 22,585,698,651.12/171,683.60
  6. Step 6: Final answer
    x = 131,554.20

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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.