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Finding the Fourth Proportional to 65,851.76, 98,787.36 and 19,098.56

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Solution

The fourth proportional to 65,851.76, 98,787.36 and 19,098.56 is: 28,650.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,851.76 : 98,787.36 = 19,098.56 : x
  2. Step 2: Convert to fraction form
    65,851.76/98,787.36 = 19,098.56/x
  3. Step 3: Cross multiply
    65,851.76x = 98,787.36 × 19,098.56
  4. Step 4: Simplify right side
    65,851.76x = 1,886,696,322.20
  5. Step 5: Solve for x
    x = 1,886,696,322.20/65,851.76
  6. Step 6: Final answer
    x = 28,650.66

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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.