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Finding the Fourth Proportional to 534,911.20, 747,476 and 534,911.20

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Solution

The fourth proportional to 534,911.20, 747,476 and 534,911.20 is: 747,476

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,911.20 : 747,476 = 534,911.20 : x
  2. Step 2: Convert to fraction form
    534,911.20/747,476 = 534,911.20/x
  3. Step 3: Cross multiply
    534,911.20x = 747,476 × 534,911.20
  4. Step 4: Simplify right side
    534,911.20x = 399,833,284,131.20
  5. Step 5: Solve for x
    x = 399,833,284,131.20/534,911.20
  6. Step 6: Final answer
    x = 747,476

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.