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Finding the Fourth Proportional to 648,114.30, 972,171.45 and 618,589.80

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Solution

The fourth proportional to 648,114.30, 972,171.45 and 618,589.80 is: 927,884.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,114.30 : 972,171.45 = 618,589.80 : x
  2. Step 2: Convert to fraction form
    648,114.30/972,171.45 = 618,589.80/x
  3. Step 3: Cross multiply
    648,114.30x = 972,171.45 × 618,589.80
  4. Step 4: Simplify right side
    648,114.30x = 601,375,342,821.21
  5. Step 5: Solve for x
    x = 601,375,342,821.21/648,114.30
  6. Step 6: Final answer
    x = 927,884.70

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1.5x scale

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.