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Finding the Fourth Proportional to 119,957.53, 165,541.45 and 66,246.20

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Solution

The fourth proportional to 119,957.53, 165,541.45 and 66,246.20 is: 91,419.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,957.53 : 165,541.45 = 66,246.20 : x
  2. Step 2: Convert to fraction form
    119,957.53/165,541.45 = 66,246.20/x
  3. Step 3: Cross multiply
    119,957.53x = 165,541.45 × 66,246.20
  4. Step 4: Simplify right side
    119,957.53x = 10,966,492,004.99
  5. Step 5: Solve for x
    x = 10,966,492,004.99/119,957.53
  6. Step 6: Final answer
    x = 91,419.79

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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.