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Finding the Fourth Proportional to 551,858.40, 826,621.20 and 551,858.40

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Solution

The fourth proportional to 551,858.40, 826,621.20 and 551,858.40 is: 826,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,858.40 : 826,621.20 = 551,858.40 : x
  2. Step 2: Convert to fraction form
    551,858.40/826,621.20 = 551,858.40/x
  3. Step 3: Cross multiply
    551,858.40x = 826,621.20 × 551,858.40
  4. Step 4: Simplify right side
    551,858.40x = 456,177,852,838.08
  5. Step 5: Solve for x
    x = 456,177,852,838.08/551,858.40
  6. Step 6: Final answer
    x = 826,621.20

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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.