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Finding the Fourth Proportional to 61,520.51, 84,858.94 and 38,819.45

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Solution

The fourth proportional to 61,520.51, 84,858.94 and 38,819.45 is: 53,546.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,520.51 : 84,858.94 = 38,819.45 : x
  2. Step 2: Convert to fraction form
    61,520.51/84,858.94 = 38,819.45/x
  3. Step 3: Cross multiply
    61,520.51x = 84,858.94 × 38,819.45
  4. Step 4: Simplify right side
    61,520.51x = 3,294,177,639.05
  5. Step 5: Solve for x
    x = 3,294,177,639.05/61,520.51
  6. Step 6: Final answer
    x = 53,546.00

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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.