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Finding the Fourth Proportional to 559,898.10, 839,847.15 and 347,321.70

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Solution

The fourth proportional to 559,898.10, 839,847.15 and 347,321.70 is: 520,982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,898.10 : 839,847.15 = 347,321.70 : x
  2. Step 2: Convert to fraction form
    559,898.10/839,847.15 = 347,321.70/x
  3. Step 3: Cross multiply
    559,898.10x = 839,847.15 × 347,321.70
  4. Step 4: Simplify right side
    559,898.10x = 291,697,139,878.16
  5. Step 5: Solve for x
    x = 291,697,139,878.16/559,898.10
  6. Step 6: Final answer
    x = 520,982.55

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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.