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Finding the Fourth Proportional to 171,622.60, 257,506.80 and 82,830.40

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Solution

The fourth proportional to 171,622.60, 257,506.80 and 82,830.40 is: 124,280.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,622.60 : 257,506.80 = 82,830.40 : x
  2. Step 2: Convert to fraction form
    171,622.60/257,506.80 = 82,830.40/x
  3. Step 3: Cross multiply
    171,622.60x = 257,506.80 × 82,830.40
  4. Step 4: Simplify right side
    171,622.60x = 21,329,391,246.72
  5. Step 5: Solve for x
    x = 21,329,391,246.72/171,622.60
  6. Step 6: Final answer
    x = 124,280.78

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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.