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Finding the Fourth Proportional to 57,346.80, 85,928.04 and 48,130.80

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Solution

The fourth proportional to 57,346.80, 85,928.04 and 48,130.80 is: 72,118.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,346.80 : 85,928.04 = 48,130.80 : x
  2. Step 2: Convert to fraction form
    57,346.80/85,928.04 = 48,130.80/x
  3. Step 3: Cross multiply
    57,346.80x = 85,928.04 × 48,130.80
  4. Step 4: Simplify right side
    57,346.80x = 4,135,785,307.63
  5. Step 5: Solve for x
    x = 4,135,785,307.63/57,346.80
  6. Step 6: Final answer
    x = 72,118.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.