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Finding the Fourth Proportional to 98,898.03, 136,478.74 and 53,576.90

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Solution

The fourth proportional to 98,898.03, 136,478.74 and 53,576.90 is: 73,935.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,898.03 : 136,478.74 = 53,576.90 : x
  2. Step 2: Convert to fraction form
    98,898.03/136,478.74 = 53,576.90/x
  3. Step 3: Cross multiply
    98,898.03x = 136,478.74 × 53,576.90
  4. Step 4: Simplify right side
    98,898.03x = 7,312,107,805.11
  5. Step 5: Solve for x
    x = 7,312,107,805.11/98,898.03
  6. Step 6: Final answer
    x = 73,935.83

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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.