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Finding the Fourth Proportional to 443,116.40, 664,674.60 and 162,597.20

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Solution

The fourth proportional to 443,116.40, 664,674.60 and 162,597.20 is: 243,895.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,116.40 : 664,674.60 = 162,597.20 : x
  2. Step 2: Convert to fraction form
    443,116.40/664,674.60 = 162,597.20/x
  3. Step 3: Cross multiply
    443,116.40x = 664,674.60 × 162,597.20
  4. Step 4: Simplify right side
    443,116.40x = 108,074,228,871.12
  5. Step 5: Solve for x
    x = 108,074,228,871.12/443,116.40
  6. Step 6: Final answer
    x = 243,895.80

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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.