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Finding the Fourth Proportional to 543,779.40, 815,669.10 and 534,448.20

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Solution

The fourth proportional to 543,779.40, 815,669.10 and 534,448.20 is: 801,672.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,779.40 : 815,669.10 = 534,448.20 : x
  2. Step 2: Convert to fraction form
    543,779.40/815,669.10 = 534,448.20/x
  3. Step 3: Cross multiply
    543,779.40x = 815,669.10 × 534,448.20
  4. Step 4: Simplify right side
    543,779.40x = 435,932,882,290.62
  5. Step 5: Solve for x
    x = 435,932,882,290.62/543,779.40
  6. Step 6: Final answer
    x = 801,672.30

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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.