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Finding the Fourth Proportional to 73,130.20, 109,824.90 and 56,530.60

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Solution

The fourth proportional to 73,130.20, 109,824.90 and 56,530.60 is: 84,896.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,130.20 : 109,824.90 = 56,530.60 : x
  2. Step 2: Convert to fraction form
    73,130.20/109,824.90 = 56,530.60/x
  3. Step 3: Cross multiply
    73,130.20x = 109,824.90 × 56,530.60
  4. Step 4: Simplify right side
    73,130.20x = 6,208,467,491.94
  5. Step 5: Solve for x
    x = 6,208,467,491.94/73,130.20
  6. Step 6: Final answer
    x = 84,896.08

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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.