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Finding the Fourth Proportional to 374,467.96, 561,646.54 and 137,755.28

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Solution

The fourth proportional to 374,467.96, 561,646.54 and 137,755.28 is: 206,612.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,467.96 : 561,646.54 = 137,755.28 : x
  2. Step 2: Convert to fraction form
    374,467.96/561,646.54 = 137,755.28/x
  3. Step 3: Cross multiply
    374,467.96x = 561,646.54 × 137,755.28
  4. Step 4: Simplify right side
    374,467.96x = 77,369,777,955.04
  5. Step 5: Solve for x
    x = 77,369,777,955.04/374,467.96
  6. Step 6: Final answer
    x = 206,612.54

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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.