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Finding the Fourth Proportional to 617,111.60, 851,692.88 and 345,194.60

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Solution

The fourth proportional to 617,111.60, 851,692.88 and 345,194.60 is: 476,412.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,111.60 : 851,692.88 = 345,194.60 : x
  2. Step 2: Convert to fraction form
    617,111.60/851,692.88 = 345,194.60/x
  3. Step 3: Cross multiply
    617,111.60x = 851,692.88 × 345,194.60
  4. Step 4: Simplify right side
    617,111.60x = 293,999,783,034.45
  5. Step 5: Solve for x
    x = 293,999,783,034.45/617,111.60
  6. Step 6: Final answer
    x = 476,412.67

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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.