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Finding the Fourth Proportional to 368,755.45, 553,133.18 and 132,012.70

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Solution

The fourth proportional to 368,755.45, 553,133.18 and 132,012.70 is: 198,019.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,755.45 : 553,133.18 = 132,012.70 : x
  2. Step 2: Convert to fraction form
    368,755.45/553,133.18 = 132,012.70/x
  3. Step 3: Cross multiply
    368,755.45x = 553,133.18 × 132,012.70
  4. Step 4: Simplify right side
    368,755.45x = 73,020,603,891.32
  5. Step 5: Solve for x
    x = 73,020,603,891.32/368,755.45
  6. Step 6: Final answer
    x = 198,019.05

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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.