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Finding the Fourth Proportional to 46,620.40, 69,930.60 and 45,648.40

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Solution

The fourth proportional to 46,620.40, 69,930.60 and 45,648.40 is: 68,472.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,620.40 : 69,930.60 = 45,648.40 : x
  2. Step 2: Convert to fraction form
    46,620.40/69,930.60 = 45,648.40/x
  3. Step 3: Cross multiply
    46,620.40x = 69,930.60 × 45,648.40
  4. Step 4: Simplify right side
    46,620.40x = 3,192,220,001.04
  5. Step 5: Solve for x
    x = 3,192,220,001.04/46,620.40
  6. Step 6: Final answer
    x = 68,472.60

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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.