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Finding the Fourth Proportional to 56,908.60, 85,209.30 and 56,908.60

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Solution

The fourth proportional to 56,908.60, 85,209.30 and 56,908.60 is: 85,209.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,908.60 : 85,209.30 = 56,908.60 : x
  2. Step 2: Convert to fraction form
    56,908.60/85,209.30 = 56,908.60/x
  3. Step 3: Cross multiply
    56,908.60x = 85,209.30 × 56,908.60
  4. Step 4: Simplify right side
    56,908.60x = 4,849,141,969.98
  5. Step 5: Solve for x
    x = 4,849,141,969.98/56,908.60
  6. Step 6: Final answer
    x = 85,209.30

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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.