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Finding the Fourth Proportional to 647,562.70, 972,218.85 and 411,366.70

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Solution

The fourth proportional to 647,562.70, 972,218.85 and 411,366.70 is: 617,605.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,562.70 : 972,218.85 = 411,366.70 : x
  2. Step 2: Convert to fraction form
    647,562.70/972,218.85 = 411,366.70/x
  3. Step 3: Cross multiply
    647,562.70x = 972,218.85 × 411,366.70
  4. Step 4: Simplify right side
    647,562.70x = 399,938,460,002.30
  5. Step 5: Solve for x
    x = 399,938,460,002.30/647,562.70
  6. Step 6: Final answer
    x = 617,605.77

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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.