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Finding the Fourth Proportional to 577,656.40, 865,793.40 and 297,029.20

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Solution

The fourth proportional to 577,656.40, 865,793.40 and 297,029.20 is: 445,188.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,656.40 : 865,793.40 = 297,029.20 : x
  2. Step 2: Convert to fraction form
    577,656.40/865,793.40 = 297,029.20/x
  3. Step 3: Cross multiply
    577,656.40x = 865,793.40 × 297,029.20
  4. Step 4: Simplify right side
    577,656.40x = 257,165,920,967.28
  5. Step 5: Solve for x
    x = 257,165,920,967.28/577,656.40
  6. Step 6: Final answer
    x = 445,188.39

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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.