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Finding the Fourth Proportional to 329,860.16, 455,207.90 and 178,957.16

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Solution

The fourth proportional to 329,860.16, 455,207.90 and 178,957.16 is: 246,961.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,860.16 : 455,207.90 = 178,957.16 : x
  2. Step 2: Convert to fraction form
    329,860.16/455,207.90 = 178,957.16/x
  3. Step 3: Cross multiply
    329,860.16x = 455,207.90 × 178,957.16
  4. Step 4: Simplify right side
    329,860.16x = 81,462,712,993.56
  5. Step 5: Solve for x
    x = 81,462,712,993.56/329,860.16
  6. Step 6: Final answer
    x = 246,961.36

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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.