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Finding the Fourth Proportional to 443,783.61, 665,609.81 and 163,235.25

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Solution

The fourth proportional to 443,783.61, 665,609.81 and 163,235.25 is: 244,828.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,783.61 : 665,609.81 = 163,235.25 : x
  2. Step 2: Convert to fraction form
    443,783.61/665,609.81 = 163,235.25/x
  3. Step 3: Cross multiply
    443,783.61x = 665,609.81 × 163,235.25
  4. Step 4: Simplify right side
    443,783.61x = 108,650,982,921.63
  5. Step 5: Solve for x
    x = 108,650,982,921.63/443,783.61
  6. Step 6: Final answer
    x = 244,828.74

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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.