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Finding the Fourth Proportional to 46,648.40, 69,972.60 and 40,816.40

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Solution

The fourth proportional to 46,648.40, 69,972.60 and 40,816.40 is: 61,224.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,648.40 : 69,972.60 = 40,816.40 : x
  2. Step 2: Convert to fraction form
    46,648.40/69,972.60 = 40,816.40/x
  3. Step 3: Cross multiply
    46,648.40x = 69,972.60 × 40,816.40
  4. Step 4: Simplify right side
    46,648.40x = 2,856,029,630.64
  5. Step 5: Solve for x
    x = 2,856,029,630.64/46,648.40
  6. Step 6: Final answer
    x = 61,224.60

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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.