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Finding the Fourth Proportional to 147,261.20, 220,920.60 and 63,021.20

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Solution

The fourth proportional to 147,261.20, 220,920.60 and 63,021.20 is: 94,544.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,261.20 : 220,920.60 = 63,021.20 : x
  2. Step 2: Convert to fraction form
    147,261.20/220,920.60 = 63,021.20/x
  3. Step 3: Cross multiply
    147,261.20x = 220,920.60 × 63,021.20
  4. Step 4: Simplify right side
    147,261.20x = 13,922,681,316.72
  5. Step 5: Solve for x
    x = 13,922,681,316.72/147,261.20
  6. Step 6: Final answer
    x = 94,544.13

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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.