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Finding the Fourth Proportional to 51,604.80, 72,091.20 and 51,604.80

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Solution

The fourth proportional to 51,604.80, 72,091.20 and 51,604.80 is: 72,091.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,604.80 : 72,091.20 = 51,604.80 : x
  2. Step 2: Convert to fraction form
    51,604.80/72,091.20 = 51,604.80/x
  3. Step 3: Cross multiply
    51,604.80x = 72,091.20 × 51,604.80
  4. Step 4: Simplify right side
    51,604.80x = 3,720,251,957.76
  5. Step 5: Solve for x
    x = 3,720,251,957.76/51,604.80
  6. Step 6: Final answer
    x = 72,091.20

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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.