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Finding the Fourth Proportional to 99,798.76, 137,718.86 and 59,491.74

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Solution

The fourth proportional to 99,798.76, 137,718.86 and 59,491.74 is: 82,096.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,798.76 : 137,718.86 = 59,491.74 : x
  2. Step 2: Convert to fraction form
    99,798.76/137,718.86 = 59,491.74/x
  3. Step 3: Cross multiply
    99,798.76x = 137,718.86 × 59,491.74
  4. Step 4: Simplify right side
    99,798.76x = 8,193,134,612.22
  5. Step 5: Solve for x
    x = 8,193,134,612.22/99,798.76
  6. Step 6: Final answer
    x = 82,096.56

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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.