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Finding the Fourth Proportional to 368,129.70, 552,194.55 and 131,480.10

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Solution

The fourth proportional to 368,129.70, 552,194.55 and 131,480.10 is: 197,220.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,129.70 : 552,194.55 = 131,480.10 : x
  2. Step 2: Convert to fraction form
    368,129.70/552,194.55 = 131,480.10/x
  3. Step 3: Cross multiply
    368,129.70x = 552,194.55 × 131,480.10
  4. Step 4: Simplify right side
    368,129.70x = 72,602,594,653.46
  5. Step 5: Solve for x
    x = 72,602,594,653.46/368,129.70
  6. Step 6: Final answer
    x = 197,220.15

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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.