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Finding the Fourth Proportional to 641,800.72, 885,917.64 and 373,528.72

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Solution

The fourth proportional to 641,800.72, 885,917.64 and 373,528.72 is: 515,605.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,800.72 : 885,917.64 = 373,528.72 : x
  2. Step 2: Convert to fraction form
    641,800.72/885,917.64 = 373,528.72/x
  3. Step 3: Cross multiply
    641,800.72x = 885,917.64 × 373,528.72
  4. Step 4: Simplify right side
    641,800.72x = 330,915,682,094.62
  5. Step 5: Solve for x
    x = 330,915,682,094.62/641,800.72
  6. Step 6: Final answer
    x = 515,605.03

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1.5x scale

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.