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Finding the Fourth Proportional to 329,811.98, 455,140.68 and 186,568.97

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Solution

The fourth proportional to 329,811.98, 455,140.68 and 186,568.97 is: 257,465.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,811.98 : 455,140.68 = 186,568.97 : x
  2. Step 2: Convert to fraction form
    329,811.98/455,140.68 = 186,568.97/x
  3. Step 3: Cross multiply
    329,811.98x = 455,140.68 × 186,568.97
  4. Step 4: Simplify right side
    329,811.98x = 84,915,127,872.70
  5. Step 5: Solve for x
    x = 84,915,127,872.70/329,811.98
  6. Step 6: Final answer
    x = 257,465.26

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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.