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Finding the Fourth Proportional to 83,438.30, 117,046.90 and 83,438.30

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Solution

The fourth proportional to 83,438.30, 117,046.90 and 83,438.30 is: 117,046.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,438.30 : 117,046.90 = 83,438.30 : x
  2. Step 2: Convert to fraction form
    83,438.30/117,046.90 = 83,438.30/x
  3. Step 3: Cross multiply
    83,438.30x = 117,046.90 × 83,438.30
  4. Step 4: Simplify right side
    83,438.30x = 9,766,194,356.27
  5. Step 5: Solve for x
    x = 9,766,194,356.27/83,438.30
  6. Step 6: Final answer
    x = 117,046.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.