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Finding the Fourth Proportional to 505,825.40, 758,519.40 and 253,008.20

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Solution

The fourth proportional to 505,825.40, 758,519.40 and 253,008.20 is: 379,402.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,825.40 : 758,519.40 = 253,008.20 : x
  2. Step 2: Convert to fraction form
    505,825.40/758,519.40 = 253,008.20/x
  3. Step 3: Cross multiply
    505,825.40x = 758,519.40 × 253,008.20
  4. Step 4: Simplify right side
    505,825.40x = 191,911,628,059.08
  5. Step 5: Solve for x
    x = 191,911,628,059.08/505,825.40
  6. Step 6: Final answer
    x = 379,402.91

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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.