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Finding the Fourth Proportional to 617,415.70, 851,766.80 and 436,282.90

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Solution

The fourth proportional to 617,415.70, 851,766.80 and 436,282.90 is: 601,881.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,415.70 : 851,766.80 = 436,282.90 : x
  2. Step 2: Convert to fraction form
    617,415.70/851,766.80 = 436,282.90/x
  3. Step 3: Cross multiply
    617,415.70x = 851,766.80 × 436,282.90
  4. Step 4: Simplify right side
    617,415.70x = 371,611,289,627.72
  5. Step 5: Solve for x
    x = 371,611,289,627.72/617,415.70
  6. Step 6: Final answer
    x = 601,881.83

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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.