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Finding the Fourth Proportional to 131,491.80, 197,164.80 and 56,599.20

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Solution

The fourth proportional to 131,491.80, 197,164.80 and 56,599.20 is: 84,867.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,491.80 : 197,164.80 = 56,599.20 : x
  2. Step 2: Convert to fraction form
    131,491.80/197,164.80 = 56,599.20/x
  3. Step 3: Cross multiply
    131,491.80x = 197,164.80 × 56,599.20
  4. Step 4: Simplify right side
    131,491.80x = 11,159,369,948.16
  5. Step 5: Solve for x
    x = 11,159,369,948.16/131,491.80
  6. Step 6: Final answer
    x = 84,867.42

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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.