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Finding the Fourth Proportional to 329,619.12, 454,871.64 and 186,407.28

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Solution

The fourth proportional to 329,619.12, 454,871.64 and 186,407.28 is: 257,240.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,619.12 : 454,871.64 = 186,407.28 : x
  2. Step 2: Convert to fraction form
    329,619.12/454,871.64 = 186,407.28/x
  3. Step 3: Cross multiply
    329,619.12x = 454,871.64 × 186,407.28
  4. Step 4: Simplify right side
    329,619.12x = 84,791,385,161.54
  5. Step 5: Solve for x
    x = 84,791,385,161.54/329,619.12
  6. Step 6: Final answer
    x = 257,240.49

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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.