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Finding the Fourth Proportional to 299,685.98, 413,574.69 and 163,725.65

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Solution

The fourth proportional to 299,685.98, 413,574.69 and 163,725.65 is: 225,945.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,685.98 : 413,574.69 = 163,725.65 : x
  2. Step 2: Convert to fraction form
    299,685.98/413,574.69 = 163,725.65/x
  3. Step 3: Cross multiply
    299,685.98x = 413,574.69 × 163,725.65
  4. Step 4: Simplify right side
    299,685.98x = 67,712,785,985.72
  5. Step 5: Solve for x
    x = 67,712,785,985.72/299,685.98
  6. Step 6: Final answer
    x = 225,945.79

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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.