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Finding the Fourth Proportional to 699,834.98, 965,803.02 and 393,931.10

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Solution

The fourth proportional to 699,834.98, 965,803.02 and 393,931.10 is: 543,642.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,834.98 : 965,803.02 = 393,931.10 : x
  2. Step 2: Convert to fraction form
    699,834.98/965,803.02 = 393,931.10/x
  3. Step 3: Cross multiply
    699,834.98x = 965,803.02 × 393,931.10
  4. Step 4: Simplify right side
    699,834.98x = 380,459,846,051.92
  5. Step 5: Solve for x
    x = 380,459,846,051.92/699,834.98
  6. Step 6: Final answer
    x = 543,642.23

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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.