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Finding the Fourth Proportional to 42,755.99, 64,134.11 and 25,213.50

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Solution

The fourth proportional to 42,755.99, 64,134.11 and 25,213.50 is: 37,820.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,755.99 : 64,134.11 = 25,213.50 : x
  2. Step 2: Convert to fraction form
    42,755.99/64,134.11 = 25,213.50/x
  3. Step 3: Cross multiply
    42,755.99x = 64,134.11 × 25,213.50
  4. Step 4: Simplify right side
    42,755.99x = 1,617,045,445.52
  5. Step 5: Solve for x
    x = 1,617,045,445.52/42,755.99
  6. Step 6: Final answer
    x = 37,820.33

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1.5x scale

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.