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Finding the Fourth Proportional to 329,803.42, 455,127.90 and 178,900.42

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Solution

The fourth proportional to 329,803.42, 455,127.90 and 178,900.42 is: 246,882.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,803.42 : 455,127.90 = 178,900.42 : x
  2. Step 2: Convert to fraction form
    329,803.42/455,127.90 = 178,900.42/x
  3. Step 3: Cross multiply
    329,803.42x = 455,127.90 × 178,900.42
  4. Step 4: Simplify right side
    329,803.42x = 81,422,572,463.72
  5. Step 5: Solve for x
    x = 81,422,572,463.72/329,803.42
  6. Step 6: Final answer
    x = 246,882.14

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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.