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Finding the Fourth Proportional to 443,066.80, 664,600.20 and 265,482.40

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Solution

The fourth proportional to 443,066.80, 664,600.20 and 265,482.40 is: 398,223.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,066.80 : 664,600.20 = 265,482.40 : x
  2. Step 2: Convert to fraction form
    443,066.80/664,600.20 = 265,482.40/x
  3. Step 3: Cross multiply
    443,066.80x = 664,600.20 × 265,482.40
  4. Step 4: Simplify right side
    443,066.80x = 176,439,656,136.48
  5. Step 5: Solve for x
    x = 176,439,656,136.48/443,066.80
  6. Step 6: Final answer
    x = 398,223.60

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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.