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Finding the Fourth Proportional to 368,388, 552,672.72 and 119,070

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Solution

The fourth proportional to 368,388, 552,672.72 and 119,070 is: 178,634.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,388 : 552,672.72 = 119,070 : x
  2. Step 2: Convert to fraction form
    368,388/552,672.72 = 119,070/x
  3. Step 3: Cross multiply
    368,388x = 552,672.72 × 119,070
  4. Step 4: Simplify right side
    368,388x = 65,806,740,770.40
  5. Step 5: Solve for x
    x = 65,806,740,770.40/368,388
  6. Step 6: Final answer
    x = 178,634.32

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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.