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Finding the Fourth Proportional to 413,703.20, 620,627.70 and 147,618.20

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Solution

The fourth proportional to 413,703.20, 620,627.70 and 147,618.20 is: 221,453.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,703.20 : 620,627.70 = 147,618.20 : x
  2. Step 2: Convert to fraction form
    413,703.20/620,627.70 = 147,618.20/x
  3. Step 3: Cross multiply
    413,703.20x = 620,627.70 × 147,618.20
  4. Step 4: Simplify right side
    413,703.20x = 91,615,943,944.14
  5. Step 5: Solve for x
    x = 91,615,943,944.14/413,703.20
  6. Step 6: Final answer
    x = 221,453.31

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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.