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Finding the Fourth Proportional to 98,622.15, 147,889.49 and 61,180.71

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Solution

The fourth proportional to 98,622.15, 147,889.49 and 61,180.71 is: 91,743.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,622.15 : 147,889.49 = 61,180.71 : x
  2. Step 2: Convert to fraction form
    98,622.15/147,889.49 = 61,180.71/x
  3. Step 3: Cross multiply
    98,622.15x = 147,889.49 × 61,180.71
  4. Step 4: Simplify right side
    98,622.15x = 9,047,983,693.83
  5. Step 5: Solve for x
    x = 9,047,983,693.83/98,622.15
  6. Step 6: Final answer
    x = 91,743.93

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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.