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Finding the Fourth Proportional to 311,897.46, 430,418.64 and 168,657.60

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Solution

The fourth proportional to 311,897.46, 430,418.64 and 168,657.60 is: 232,747.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,897.46 : 430,418.64 = 168,657.60 : x
  2. Step 2: Convert to fraction form
    311,897.46/430,418.64 = 168,657.60/x
  3. Step 3: Cross multiply
    311,897.46x = 430,418.64 × 168,657.60
  4. Step 4: Simplify right side
    311,897.46x = 72,593,374,817.66
  5. Step 5: Solve for x
    x = 72,593,374,817.66/311,897.46
  6. Step 6: Final answer
    x = 232,747.57

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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.