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Finding the Fourth Proportional to 98,311.56, 135,681.68 and 62,065.68

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Solution

The fourth proportional to 98,311.56, 135,681.68 and 62,065.68 is: 85,658.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,311.56 : 135,681.68 = 62,065.68 : x
  2. Step 2: Convert to fraction form
    98,311.56/135,681.68 = 62,065.68/x
  3. Step 3: Cross multiply
    98,311.56x = 135,681.68 × 62,065.68
  4. Step 4: Simplify right side
    98,311.56x = 8,421,175,732.74
  5. Step 5: Solve for x
    x = 8,421,175,732.74/98,311.56
  6. Step 6: Final answer
    x = 85,658.04

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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.