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Finding the Fourth Proportional to 57,646.40, 79,472.96 and 36,415.04

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Solution

The fourth proportional to 57,646.40, 79,472.96 and 36,415.04 is: 50,202.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,646.40 : 79,472.96 = 36,415.04 : x
  2. Step 2: Convert to fraction form
    57,646.40/79,472.96 = 36,415.04/x
  3. Step 3: Cross multiply
    57,646.40x = 79,472.96 × 36,415.04
  4. Step 4: Simplify right side
    57,646.40x = 2,894,011,017.32
  5. Step 5: Solve for x
    x = 2,894,011,017.32/57,646.40
  6. Step 6: Final answer
    x = 50,202.81

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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.