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Finding the Fourth Proportional to 171,326.80, 257,000.28 and 66,146.32

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Solution

The fourth proportional to 171,326.80, 257,000.28 and 66,146.32 is: 99,223.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,326.80 : 257,000.28 = 66,146.32 : x
  2. Step 2: Convert to fraction form
    171,326.80/257,000.28 = 66,146.32/x
  3. Step 3: Cross multiply
    171,326.80x = 257,000.28 × 66,146.32
  4. Step 4: Simplify right side
    171,326.80x = 16,999,622,760.97
  5. Step 5: Solve for x
    x = 16,999,622,760.97/171,326.80
  6. Step 6: Final answer
    x = 99,223.37

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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.