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Finding the Fourth Proportional to 654,265.80, 981,431.10 and 339,337.80

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Solution

The fourth proportional to 654,265.80, 981,431.10 and 339,337.80 is: 509,023.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,265.80 : 981,431.10 = 339,337.80 : x
  2. Step 2: Convert to fraction form
    654,265.80/981,431.10 = 339,337.80/x
  3. Step 3: Cross multiply
    654,265.80x = 981,431.10 × 339,337.80
  4. Step 4: Simplify right side
    654,265.80x = 333,036,670,325.58
  5. Step 5: Solve for x
    x = 333,036,670,325.58/654,265.80
  6. Step 6: Final answer
    x = 509,023.50

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Double scale
Find fourth proportional to 654,266.80, 981,432.60 and 339,338.80
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.