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Finding the Fourth Proportional to 586,401.60, 809,321.04 and 371,561.67

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Solution

The fourth proportional to 586,401.60, 809,321.04 and 371,561.67 is: 512,810.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,401.60 : 809,321.04 = 371,561.67 : x
  2. Step 2: Convert to fraction form
    586,401.60/809,321.04 = 371,561.67/x
  3. Step 3: Cross multiply
    586,401.60x = 809,321.04 × 371,561.67
  4. Step 4: Simplify right side
    586,401.60x = 300,712,677,188.54
  5. Step 5: Solve for x
    x = 300,712,677,188.54/586,401.60
  6. Step 6: Final answer
    x = 512,810.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.