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Finding the Fourth Proportional to 619,438.80, 854,890.02 and 347,580.12

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Solution

The fourth proportional to 619,438.80, 854,890.02 and 347,580.12 is: 479,696.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,438.80 : 854,890.02 = 347,580.12 : x
  2. Step 2: Convert to fraction form
    619,438.80/854,890.02 = 347,580.12/x
  3. Step 3: Cross multiply
    619,438.80x = 854,890.02 × 347,580.12
  4. Step 4: Simplify right side
    619,438.80x = 297,142,775,738.40
  5. Step 5: Solve for x
    x = 297,142,775,738.40/619,438.80
  6. Step 6: Final answer
    x = 479,696.74

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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.