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Finding the Fourth Proportional to 652,807.20, 977,898.60 and 440,230.80

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Solution

The fourth proportional to 652,807.20, 977,898.60 and 440,230.80 is: 659,461.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,807.20 : 977,898.60 = 440,230.80 : x
  2. Step 2: Convert to fraction form
    652,807.20/977,898.60 = 440,230.80/x
  3. Step 3: Cross multiply
    652,807.20x = 977,898.60 × 440,230.80
  4. Step 4: Simplify right side
    652,807.20x = 430,501,082,996.88
  5. Step 5: Solve for x
    x = 430,501,082,996.88/652,807.20
  6. Step 6: Final answer
    x = 659,461.30

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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.