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Finding the Fourth Proportional to 572,910.86, 790,622.56 and 314,783.66

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Solution

The fourth proportional to 572,910.86, 790,622.56 and 314,783.66 is: 434,404.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,910.86 : 790,622.56 = 314,783.66 : x
  2. Step 2: Convert to fraction form
    572,910.86/790,622.56 = 314,783.66/x
  3. Step 3: Cross multiply
    572,910.86x = 790,622.56 × 314,783.66
  4. Step 4: Simplify right side
    572,910.86x = 248,875,063,115.37
  5. Step 5: Solve for x
    x = 248,875,063,115.37/572,910.86
  6. Step 6: Final answer
    x = 434,404.51

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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.