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Finding the Fourth Proportional to 620,123.80, 930,185.70 and 441,664.60

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Solution

The fourth proportional to 620,123.80, 930,185.70 and 441,664.60 is: 662,496.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,123.80 : 930,185.70 = 441,664.60 : x
  2. Step 2: Convert to fraction form
    620,123.80/930,185.70 = 441,664.60/x
  3. Step 3: Cross multiply
    620,123.80x = 930,185.70 × 441,664.60
  4. Step 4: Simplify right side
    620,123.80x = 410,830,095,116.22
  5. Step 5: Solve for x
    x = 410,830,095,116.22/620,123.80
  6. Step 6: Final answer
    x = 662,496.90

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Similar ratio
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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.