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Finding the Fourth Proportional to 171,814.64, 257,846.86 and 129,746.76

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Solution

The fourth proportional to 171,814.64, 257,846.86 and 129,746.76 is: 194,714.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,814.64 : 257,846.86 = 129,746.76 : x
  2. Step 2: Convert to fraction form
    171,814.64/257,846.86 = 129,746.76/x
  3. Step 3: Cross multiply
    171,814.64x = 257,846.86 × 129,746.76
  4. Step 4: Simplify right side
    171,814.64x = 33,454,794,661.17
  5. Step 5: Solve for x
    x = 33,454,794,661.17/171,814.64
  6. Step 6: Final answer
    x = 194,714.46

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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.