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Finding the Fourth Proportional to 61,478.64, 84,833.46 and 34,620.48

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Solution

The fourth proportional to 61,478.64, 84,833.46 and 34,620.48 is: 47,772.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,478.64 : 84,833.46 = 34,620.48 : x
  2. Step 2: Convert to fraction form
    61,478.64/84,833.46 = 34,620.48/x
  3. Step 3: Cross multiply
    61,478.64x = 84,833.46 × 34,620.48
  4. Step 4: Simplify right side
    61,478.64x = 2,936,975,105.26
  5. Step 5: Solve for x
    x = 2,936,975,105.26/61,478.64
  6. Step 6: Final answer
    x = 47,772.28

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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.