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Finding the Fourth Proportional to 198,391.74, 273,824.21 and 130,415.00

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Solution

The fourth proportional to 198,391.74, 273,824.21 and 130,415.00 is: 180,001.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,391.74 : 273,824.21 = 130,415.00 : x
  2. Step 2: Convert to fraction form
    198,391.74/273,824.21 = 130,415.00/x
  3. Step 3: Cross multiply
    198,391.74x = 273,824.21 × 130,415.00
  4. Step 4: Simplify right side
    198,391.74x = 35,710,782,325.95
  5. Step 5: Solve for x
    x = 35,710,782,325.95/198,391.74
  6. Step 6: Final answer
    x = 180,001.36

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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.