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Finding the Fourth Proportional to 125,605.68, 188,339.18 and 65,484.15

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Solution

The fourth proportional to 125,605.68, 188,339.18 and 65,484.15 is: 98,190.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,605.68 : 188,339.18 = 65,484.15 : x
  2. Step 2: Convert to fraction form
    125,605.68/188,339.18 = 65,484.15/x
  3. Step 3: Cross multiply
    125,605.68x = 188,339.18 × 65,484.15
  4. Step 4: Simplify right side
    125,605.68x = 12,333,230,786.58
  5. Step 5: Solve for x
    x = 12,333,230,786.58/125,605.68
  6. Step 6: Final answer
    x = 98,190.07

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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.