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Finding the Fourth Proportional to 768,187.67, 1,059,673.60 and 539,086.86

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Solution

The fourth proportional to 768,187.67, 1,059,673.60 and 539,086.86 is: 743,641.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,187.67 : 1,059,673.60 = 539,086.86 : x
  2. Step 2: Convert to fraction form
    768,187.67/1,059,673.60 = 539,086.86/x
  3. Step 3: Cross multiply
    768,187.67x = 1,059,673.60 × 539,086.86
  4. Step 4: Simplify right side
    768,187.67x = 571,256,113,648.90
  5. Step 5: Solve for x
    x = 571,256,113,648.90/768,187.67
  6. Step 6: Final answer
    x = 743,641.35

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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.