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Finding the Fourth Proportional to 547,655.70, 821,421.27 and 148,327.59

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Solution

The fourth proportional to 547,655.70, 821,421.27 and 148,327.59 is: 222,474.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,655.70 : 821,421.27 = 148,327.59 : x
  2. Step 2: Convert to fraction form
    547,655.70/821,421.27 = 148,327.59/x
  3. Step 3: Cross multiply
    547,655.70x = 821,421.27 × 148,327.59
  4. Step 4: Simplify right side
    547,655.70x = 121,839,437,353.84
  5. Step 5: Solve for x
    x = 121,839,437,353.84/547,655.70
  6. Step 6: Final answer
    x = 222,474.52

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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.