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Finding the Fourth Proportional to 587,312.55, 820,466.10 and 587,312.55

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Solution

The fourth proportional to 587,312.55, 820,466.10 and 587,312.55 is: 820,466.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,312.55 : 820,466.10 = 587,312.55 : x
  2. Step 2: Convert to fraction form
    587,312.55/820,466.10 = 587,312.55/x
  3. Step 3: Cross multiply
    587,312.55x = 820,466.10 × 587,312.55
  4. Step 4: Simplify right side
    587,312.55x = 481,870,037,379.56
  5. Step 5: Solve for x
    x = 481,870,037,379.56/587,312.55
  6. Step 6: Final answer
    x = 820,466.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.