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Finding the Fourth Proportional to 98,216.60, 147,324.92 and 28,095.91

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Solution

The fourth proportional to 98,216.60, 147,324.92 and 28,095.91 is: 42,143.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,216.60 : 147,324.92 = 28,095.91 : x
  2. Step 2: Convert to fraction form
    98,216.60/147,324.92 = 28,095.91/x
  3. Step 3: Cross multiply
    98,216.60x = 147,324.92 × 28,095.91
  4. Step 4: Simplify right side
    98,216.60x = 4,139,227,184.29
  5. Step 5: Solve for x
    x = 4,139,227,184.29/98,216.60
  6. Step 6: Final answer
    x = 42,143.87

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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.