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Finding the Fourth Proportional to 265,695.19, 398,541.30 and 66,015.48

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Solution

The fourth proportional to 265,695.19, 398,541.30 and 66,015.48 is: 99,022.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,695.19 : 398,541.30 = 66,015.48 : x
  2. Step 2: Convert to fraction form
    265,695.19/398,541.30 = 66,015.48/x
  3. Step 3: Cross multiply
    265,695.19x = 398,541.30 × 66,015.48
  4. Step 4: Simplify right side
    265,695.19x = 26,309,896,466.30
  5. Step 5: Solve for x
    x = 26,309,896,466.30/265,695.19
  6. Step 6: Final answer
    x = 99,022.86

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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.