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Finding the Fourth Proportional to 311,838.06, 430,336.41 and 168,598.06

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Solution

The fourth proportional to 311,838.06, 430,336.41 and 168,598.06 is: 232,665.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,838.06 : 430,336.41 = 168,598.06 : x
  2. Step 2: Convert to fraction form
    311,838.06/430,336.41 = 168,598.06/x
  3. Step 3: Cross multiply
    311,838.06x = 430,336.41 × 168,598.06
  4. Step 4: Simplify right side
    311,838.06x = 72,553,883,873.36
  5. Step 5: Solve for x
    x = 72,553,883,873.36/311,838.06
  6. Step 6: Final answer
    x = 232,665.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.