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Finding the Fourth Proportional to 98,954.70, 148,081.68 and 61,532.40

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Solution

The fourth proportional to 98,954.70, 148,081.68 and 61,532.40 is: 92,080.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,954.70 : 148,081.68 = 61,532.40 : x
  2. Step 2: Convert to fraction form
    98,954.70/148,081.68 = 61,532.40/x
  3. Step 3: Cross multiply
    98,954.70x = 148,081.68 × 61,532.40
  4. Step 4: Simplify right side
    98,954.70x = 9,111,821,166.43
  5. Step 5: Solve for x
    x = 9,111,821,166.43/98,954.70
  6. Step 6: Final answer
    x = 92,080.73

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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.