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Finding the Fourth Proportional to 98,379.60, 135,784.02 and 62,562.69

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Solution

The fourth proportional to 98,379.60, 135,784.02 and 62,562.69 is: 86,349.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,379.60 : 135,784.02 = 62,562.69 : x
  2. Step 2: Convert to fraction form
    98,379.60/135,784.02 = 62,562.69/x
  3. Step 3: Cross multiply
    98,379.60x = 135,784.02 × 62,562.69
  4. Step 4: Simplify right side
    98,379.60x = 8,495,013,550.21
  5. Step 5: Solve for x
    x = 8,495,013,550.21/98,379.60
  6. Step 6: Final answer
    x = 86,349.34

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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.