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Finding the Fourth Proportional to 440,761.90, 661,391.96 and 188,018.51

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Solution

The fourth proportional to 440,761.90, 661,391.96 and 188,018.51 is: 282,134.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,761.90 : 661,391.96 = 188,018.51 : x
  2. Step 2: Convert to fraction form
    440,761.90/661,391.96 = 188,018.51/x
  3. Step 3: Cross multiply
    440,761.90x = 661,391.96 × 188,018.51
  4. Step 4: Simplify right side
    440,761.90x = 124,353,926,598.13
  5. Step 5: Solve for x
    x = 124,353,926,598.13/440,761.90
  6. Step 6: Final answer
    x = 282,134.02

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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.