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Finding the Fourth Proportional to 57,072.01, 78,711.04 and 34,406.03

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Solution

The fourth proportional to 57,072.01, 78,711.04 and 34,406.03 is: 47,451.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,072.01 : 78,711.04 = 34,406.03 : x
  2. Step 2: Convert to fraction form
    57,072.01/78,711.04 = 34,406.03/x
  3. Step 3: Cross multiply
    57,072.01x = 78,711.04 × 34,406.03
  4. Step 4: Simplify right side
    57,072.01x = 2,708,134,403.57
  5. Step 5: Solve for x
    x = 2,708,134,403.57/57,072.01
  6. Step 6: Final answer
    x = 47,451.18

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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.