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Finding the Fourth Proportional to 119,362.74, 164,720.64 and 65,651.40

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Solution

The fourth proportional to 119,362.74, 164,720.64 and 65,651.40 is: 90,598.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,362.74 : 164,720.64 = 65,651.40 : x
  2. Step 2: Convert to fraction form
    119,362.74/164,720.64 = 65,651.40/x
  3. Step 3: Cross multiply
    119,362.74x = 164,720.64 × 65,651.40
  4. Step 4: Simplify right side
    119,362.74x = 10,814,140,624.90
  5. Step 5: Solve for x
    x = 10,814,140,624.90/119,362.74
  6. Step 6: Final answer
    x = 90,598.96

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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.