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Finding the Fourth Proportional to 304,637.20, 456,984.60 and 83,021.20

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Solution

The fourth proportional to 304,637.20, 456,984.60 and 83,021.20 is: 124,539.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,637.20 : 456,984.60 = 83,021.20 : x
  2. Step 2: Convert to fraction form
    304,637.20/456,984.60 = 83,021.20/x
  3. Step 3: Cross multiply
    304,637.20x = 456,984.60 × 83,021.20
  4. Step 4: Simplify right side
    304,637.20x = 37,939,409,873.52
  5. Step 5: Solve for x
    x = 37,939,409,873.52/304,637.20
  6. Step 6: Final answer
    x = 124,539.65

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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.