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Finding the Fourth Proportional to 538,431.40, 807,647.10 and 183,845.80

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Solution

The fourth proportional to 538,431.40, 807,647.10 and 183,845.80 is: 275,768.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,431.40 : 807,647.10 = 183,845.80 : x
  2. Step 2: Convert to fraction form
    538,431.40/807,647.10 = 183,845.80/x
  3. Step 3: Cross multiply
    538,431.40x = 807,647.10 × 183,845.80
  4. Step 4: Simplify right side
    538,431.40x = 148,482,527,217.18
  5. Step 5: Solve for x
    x = 148,482,527,217.18/538,431.40
  6. Step 6: Final answer
    x = 275,768.70

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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.