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Finding the Fourth Proportional to 150,666.81, 225,992.90 and 55,915.47

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Solution

The fourth proportional to 150,666.81, 225,992.90 and 55,915.47 is: 83,870.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,666.81 : 225,992.90 = 55,915.47 : x
  2. Step 2: Convert to fraction form
    150,666.81/225,992.90 = 55,915.47/x
  3. Step 3: Cross multiply
    150,666.81x = 225,992.90 × 55,915.47
  4. Step 4: Simplify right side
    150,666.81x = 12,636,498,090.20
  5. Step 5: Solve for x
    x = 12,636,498,090.20/150,666.81
  6. Step 6: Final answer
    x = 83,870.48

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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.