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Finding the Fourth Proportional to 374,406.48, 561,298.68 and 261,764.64

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Solution

The fourth proportional to 374,406.48, 561,298.68 and 261,764.64 is: 392,429.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,406.48 : 561,298.68 = 261,764.64 : x
  2. Step 2: Convert to fraction form
    374,406.48/561,298.68 = 261,764.64/x
  3. Step 3: Cross multiply
    374,406.48x = 561,298.68 × 261,764.64
  4. Step 4: Simplify right side
    374,406.48x = 146,928,146,902.68
  5. Step 5: Solve for x
    x = 146,928,146,902.68/374,406.48
  6. Step 6: Final answer
    x = 392,429.50

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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.