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Finding the Fourth Proportional to 685,588.74, 945,999.99 and 430,759.50

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Solution

The fourth proportional to 685,588.74, 945,999.99 and 430,759.50 is: 594,377.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,588.74 : 945,999.99 = 430,759.50 : x
  2. Step 2: Convert to fraction form
    685,588.74/945,999.99 = 430,759.50/x
  3. Step 3: Cross multiply
    685,588.74x = 945,999.99 × 430,759.50
  4. Step 4: Simplify right side
    685,588.74x = 407,498,482,692.41
  5. Step 5: Solve for x
    x = 407,498,482,692.41/685,588.74
  6. Step 6: Final answer
    x = 594,377.44

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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.