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Finding the Fourth Proportional to 587,412.40, 879,806.40 and 482,436.40

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Solution

The fourth proportional to 587,412.40, 879,806.40 and 482,436.40 is: 722,576.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,412.40 : 879,806.40 = 482,436.40 : x
  2. Step 2: Convert to fraction form
    587,412.40/879,806.40 = 482,436.40/x
  3. Step 3: Cross multiply
    587,412.40x = 879,806.40 × 482,436.40
  4. Step 4: Simplify right side
    587,412.40x = 424,450,632,312.96
  5. Step 5: Solve for x
    x = 424,450,632,312.96/587,412.40
  6. Step 6: Final answer
    x = 722,576.90

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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.