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Finding the Fourth Proportional to 171,868, 257,791.64 and 102,190.72

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Solution

The fourth proportional to 171,868, 257,791.64 and 102,190.72 is: 153,279.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,868 : 257,791.64 = 102,190.72 : x
  2. Step 2: Convert to fraction form
    171,868/257,791.64 = 102,190.72/x
  3. Step 3: Cross multiply
    171,868x = 257,791.64 × 102,190.72
  4. Step 4: Simplify right side
    171,868x = 26,343,913,301.58
  5. Step 5: Solve for x
    x = 26,343,913,301.58/171,868
  6. Step 6: Final answer
    x = 153,279.92

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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.