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Finding the Fourth Proportional to 505,643.12, 758,685.84 and 239,593.76

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Solution

The fourth proportional to 505,643.12, 758,685.84 and 239,593.76 is: 359,495.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,643.12 : 758,685.84 = 239,593.76 : x
  2. Step 2: Convert to fraction form
    505,643.12/758,685.84 = 239,593.76/x
  3. Step 3: Cross multiply
    505,643.12x = 758,685.84 × 239,593.76
  4. Step 4: Simplify right side
    505,643.12x = 181,776,393,064.36
  5. Step 5: Solve for x
    x = 181,776,393,064.36/505,643.12
  6. Step 6: Final answer
    x = 359,495.43

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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.