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Finding the Fourth Proportional to 627,743.18, 865,472.46 and 406,586.98

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Solution

The fourth proportional to 627,743.18, 865,472.46 and 406,586.98 is: 560,563.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,743.18 : 865,472.46 = 406,586.98 : x
  2. Step 2: Convert to fraction form
    627,743.18/865,472.46 = 406,586.98/x
  3. Step 3: Cross multiply
    627,743.18x = 865,472.46 × 406,586.98
  4. Step 4: Simplify right side
    627,743.18x = 351,889,833,784.57
  5. Step 5: Solve for x
    x = 351,889,833,784.57/627,743.18
  6. Step 6: Final answer
    x = 560,563.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.