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Finding the Fourth Proportional to 572,092.40, 857,879.40 and 216,988.40

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Solution

The fourth proportional to 572,092.40, 857,879.40 and 216,988.40 is: 325,384.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,092.40 : 857,879.40 = 216,988.40 : x
  2. Step 2: Convert to fraction form
    572,092.40/857,879.40 = 216,988.40/x
  3. Step 3: Cross multiply
    572,092.40x = 857,879.40 × 216,988.40
  4. Step 4: Simplify right side
    572,092.40x = 186,149,878,398.96
  5. Step 5: Solve for x
    x = 186,149,878,398.96/572,092.40
  6. Step 6: Final answer
    x = 325,384.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.