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Finding the Fourth Proportional to 529,615.40, 743,327.80 and 529,615.40

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Solution

The fourth proportional to 529,615.40, 743,327.80 and 529,615.40 is: 743,327.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,615.40 : 743,327.80 = 529,615.40 : x
  2. Step 2: Convert to fraction form
    529,615.40/743,327.80 = 529,615.40/x
  3. Step 3: Cross multiply
    529,615.40x = 743,327.80 × 529,615.40
  4. Step 4: Simplify right side
    529,615.40x = 393,677,850,128.12
  5. Step 5: Solve for x
    x = 393,677,850,128.12/529,615.40
  6. Step 6: Final answer
    x = 743,327.80

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1.5x scale

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.