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Finding the Fourth Proportional to 443,581.20, 665,371.80 and 163,040.40

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Solution

The fourth proportional to 443,581.20, 665,371.80 and 163,040.40 is: 244,560.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,581.20 : 665,371.80 = 163,040.40 : x
  2. Step 2: Convert to fraction form
    443,581.20/665,371.80 = 163,040.40/x
  3. Step 3: Cross multiply
    443,581.20x = 665,371.80 × 163,040.40
  4. Step 4: Simplify right side
    443,581.20x = 108,482,484,420.72
  5. Step 5: Solve for x
    x = 108,482,484,420.72/443,581.20
  6. Step 6: Final answer
    x = 244,560.60

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1.5x scale

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.