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Finding the Fourth Proportional to 648,843.80, 973,338.60 and 199,561.10

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Solution

The fourth proportional to 648,843.80, 973,338.60 and 199,561.10 is: 299,364.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,843.80 : 973,338.60 = 199,561.10 : x
  2. Step 2: Convert to fraction form
    648,843.80/973,338.60 = 199,561.10/x
  3. Step 3: Cross multiply
    648,843.80x = 973,338.60 × 199,561.10
  4. Step 4: Simplify right side
    648,843.80x = 194,240,521,688.46
  5. Step 5: Solve for x
    x = 194,240,521,688.46/648,843.80
  6. Step 6: Final answer
    x = 299,364.07

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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.