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Finding the Fourth Proportional to 124,487.35, 186,468.45 and 84,530.86

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Solution

The fourth proportional to 124,487.35, 186,468.45 and 84,530.86 is: 126,617.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,487.35 : 186,468.45 = 84,530.86 : x
  2. Step 2: Convert to fraction form
    124,487.35/186,468.45 = 84,530.86/x
  3. Step 3: Cross multiply
    124,487.35x = 186,468.45 × 84,530.86
  4. Step 4: Simplify right side
    124,487.35x = 15,762,338,441.37
  5. Step 5: Solve for x
    x = 15,762,338,441.37/124,487.35
  6. Step 6: Final answer
    x = 126,617.99

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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.