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Finding the Fourth Proportional to 375,966.96, 518,331.96 and 298,698.72

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Solution

The fourth proportional to 375,966.96, 518,331.96 and 298,698.72 is: 411,805.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,966.96 : 518,331.96 = 298,698.72 : x
  2. Step 2: Convert to fraction form
    375,966.96/518,331.96 = 298,698.72/x
  3. Step 3: Cross multiply
    375,966.96x = 518,331.96 × 298,698.72
  4. Step 4: Simplify right side
    375,966.96x = 154,825,092,987.09
  5. Step 5: Solve for x
    x = 154,825,092,987.09/375,966.96
  6. Step 6: Final answer
    x = 411,805.05

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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.