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Finding the Fourth Proportional to 411,437.70, 617,156.55 and 405,532.80

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Solution

The fourth proportional to 411,437.70, 617,156.55 and 405,532.80 is: 608,299.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,437.70 : 617,156.55 = 405,532.80 : x
  2. Step 2: Convert to fraction form
    411,437.70/617,156.55 = 405,532.80/x
  3. Step 3: Cross multiply
    411,437.70x = 617,156.55 × 405,532.80
  4. Step 4: Simplify right side
    411,437.70x = 250,277,223,759.84
  5. Step 5: Solve for x
    x = 250,277,223,759.84/411,437.70
  6. Step 6: Final answer
    x = 608,299.20

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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.