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Finding the Fourth Proportional to 417,967.40, 627,104.70 and 168,674.60

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Solution

The fourth proportional to 417,967.40, 627,104.70 and 168,674.60 is: 253,073.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,967.40 : 627,104.70 = 168,674.60 : x
  2. Step 2: Convert to fraction form
    417,967.40/627,104.70 = 168,674.60/x
  3. Step 3: Cross multiply
    417,967.40x = 627,104.70 × 168,674.60
  4. Step 4: Simplify right side
    417,967.40x = 105,776,634,430.62
  5. Step 5: Solve for x
    x = 105,776,634,430.62/417,967.40
  6. Step 6: Final answer
    x = 253,073.89

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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.