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Finding the Fourth Proportional to 530,991.68, 732,764.88 and 289,274.45

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Solution

The fourth proportional to 530,991.68, 732,764.88 and 289,274.45 is: 399,196.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,991.68 : 732,764.88 = 289,274.45 : x
  2. Step 2: Convert to fraction form
    530,991.68/732,764.88 = 289,274.45/x
  3. Step 3: Cross multiply
    530,991.68x = 732,764.88 × 289,274.45
  4. Step 4: Simplify right side
    530,991.68x = 211,970,153,977.49
  5. Step 5: Solve for x
    x = 211,970,153,977.49/530,991.68
  6. Step 6: Final answer
    x = 399,196.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.