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Finding the Fourth Proportional to 443,807.60, 665,711.40 and 148,319.60

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Solution

The fourth proportional to 443,807.60, 665,711.40 and 148,319.60 is: 222,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,807.60 : 665,711.40 = 148,319.60 : x
  2. Step 2: Convert to fraction form
    443,807.60/665,711.40 = 148,319.60/x
  3. Step 3: Cross multiply
    443,807.60x = 665,711.40 × 148,319.60
  4. Step 4: Simplify right side
    443,807.60x = 98,738,048,563.44
  5. Step 5: Solve for x
    x = 98,738,048,563.44/443,807.60
  6. Step 6: Final answer
    x = 222,479.40

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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.