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Finding the Fourth Proportional to 452,783.40, 678,743.10 and 168,397.80

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Solution

The fourth proportional to 452,783.40, 678,743.10 and 168,397.80 is: 252,436.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,783.40 : 678,743.10 = 168,397.80 : x
  2. Step 2: Convert to fraction form
    452,783.40/678,743.10 = 168,397.80/x
  3. Step 3: Cross multiply
    452,783.40x = 678,743.10 × 168,397.80
  4. Step 4: Simplify right side
    452,783.40x = 114,298,844,805.18
  5. Step 5: Solve for x
    x = 114,298,844,805.18/452,783.40
  6. Step 6: Final answer
    x = 252,436.03

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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.