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Finding the Fourth Proportional to 417,717.60, 626,576.40 and 193,077.60

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Solution

The fourth proportional to 417,717.60, 626,576.40 and 193,077.60 is: 289,616.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,717.60 : 626,576.40 = 193,077.60 : x
  2. Step 2: Convert to fraction form
    417,717.60/626,576.40 = 193,077.60/x
  3. Step 3: Cross multiply
    417,717.60x = 626,576.40 × 193,077.60
  4. Step 4: Simplify right side
    417,717.60x = 120,977,867,528.64
  5. Step 5: Solve for x
    x = 120,977,867,528.64/417,717.60
  6. Step 6: Final answer
    x = 289,616.40

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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.