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Finding the Fourth Proportional to 647,029.90, 970,544.85 and 411,417.10

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Solution

The fourth proportional to 647,029.90, 970,544.85 and 411,417.10 is: 617,125.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,029.90 : 970,544.85 = 411,417.10 : x
  2. Step 2: Convert to fraction form
    647,029.90/970,544.85 = 411,417.10/x
  3. Step 3: Cross multiply
    647,029.90x = 970,544.85 × 411,417.10
  4. Step 4: Simplify right side
    647,029.90x = 399,298,747,606.94
  5. Step 5: Solve for x
    x = 399,298,747,606.94/647,029.90
  6. Step 6: Final answer
    x = 617,125.65

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Double scale
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Similar ratio
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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.