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Finding the Fourth Proportional to 638,901.60, 881,967.60 and 412,657.44

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Solution

The fourth proportional to 638,901.60, 881,967.60 and 412,657.44 is: 569,650.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,901.60 : 881,967.60 = 412,657.44 : x
  2. Step 2: Convert to fraction form
    638,901.60/881,967.60 = 412,657.44/x
  3. Step 3: Cross multiply
    638,901.60x = 881,967.60 × 412,657.44
  4. Step 4: Simplify right side
    638,901.60x = 363,950,491,978.94
  5. Step 5: Solve for x
    x = 363,950,491,978.94/638,901.60
  6. Step 6: Final answer
    x = 569,650.31

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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.