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Finding the Fourth Proportional to 587,412.80, 881,119.20 and 551,983.40

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Solution

The fourth proportional to 587,412.80, 881,119.20 and 551,983.40 is: 827,975.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,412.80 : 881,119.20 = 551,983.40 : x
  2. Step 2: Convert to fraction form
    587,412.80/881,119.20 = 551,983.40/x
  3. Step 3: Cross multiply
    587,412.80x = 881,119.20 × 551,983.40
  4. Step 4: Simplify right side
    587,412.80x = 486,363,171,821.28
  5. Step 5: Solve for x
    x = 486,363,171,821.28/587,412.80
  6. Step 6: Final answer
    x = 827,975.10

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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.