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Finding the Fourth Proportional to 171,506.80, 257,260.20 and 53,190.10

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Solution

The fourth proportional to 171,506.80, 257,260.20 and 53,190.10 is: 79,785.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,506.80 : 257,260.20 = 53,190.10 : x
  2. Step 2: Convert to fraction form
    171,506.80/257,260.20 = 53,190.10/x
  3. Step 3: Cross multiply
    171,506.80x = 257,260.20 × 53,190.10
  4. Step 4: Simplify right side
    171,506.80x = 13,683,695,764.02
  5. Step 5: Solve for x
    x = 13,683,695,764.02/171,506.80
  6. Step 6: Final answer
    x = 79,785.15

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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.