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Finding the Fourth Proportional to 352,357.20, 528,568.20 and 99,637.20

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Solution

The fourth proportional to 352,357.20, 528,568.20 and 99,637.20 is: 149,464.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,357.20 : 528,568.20 = 99,637.20 : x
  2. Step 2: Convert to fraction form
    352,357.20/528,568.20 = 99,637.20/x
  3. Step 3: Cross multiply
    352,357.20x = 528,568.20 × 99,637.20
  4. Step 4: Simplify right side
    352,357.20x = 52,665,055,457.04
  5. Step 5: Solve for x
    x = 52,665,055,457.04/352,357.20
  6. Step 6: Final answer
    x = 149,464.96

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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.