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Finding the Fourth Proportional to 610,360.41, 915,353.60 and 422,031

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Solution

The fourth proportional to 610,360.41, 915,353.60 and 422,031 is: 632,917.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,360.41 : 915,353.60 = 422,031 : x
  2. Step 2: Convert to fraction form
    610,360.41/915,353.60 = 422,031/x
  3. Step 3: Cross multiply
    610,360.41x = 915,353.60 × 422,031
  4. Step 4: Simplify right side
    610,360.41x = 386,307,595,161.60
  5. Step 5: Solve for x
    x = 386,307,595,161.60/610,360.41
  6. Step 6: Final answer
    x = 632,917.19

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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.