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Finding the Fourth Proportional to 539,108.29, 744,208.50 and 348,214.78

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Solution

The fourth proportional to 539,108.29, 744,208.50 and 348,214.78 is: 480,690.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,108.29 : 744,208.50 = 348,214.78 : x
  2. Step 2: Convert to fraction form
    539,108.29/744,208.50 = 348,214.78/x
  3. Step 3: Cross multiply
    539,108.29x = 744,208.50 × 348,214.78
  4. Step 4: Simplify right side
    539,108.29x = 259,144,399,101.63
  5. Step 5: Solve for x
    x = 259,144,399,101.63/539,108.29
  6. Step 6: Final answer
    x = 480,690.81

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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.