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Finding the Fourth Proportional to 591,720.40, 887,580.60 and 493,305.40

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Solution

The fourth proportional to 591,720.40, 887,580.60 and 493,305.40 is: 739,958.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,720.40 : 887,580.60 = 493,305.40 : x
  2. Step 2: Convert to fraction form
    591,720.40/887,580.60 = 493,305.40/x
  3. Step 3: Cross multiply
    591,720.40x = 887,580.60 × 493,305.40
  4. Step 4: Simplify right side
    591,720.40x = 437,848,302,915.24
  5. Step 5: Solve for x
    x = 437,848,302,915.24/591,720.40
  6. Step 6: Final answer
    x = 739,958.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.