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Finding the Fourth Proportional to 124,486.86, 186,467.70 and 84,530.36

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Solution

The fourth proportional to 124,486.86, 186,467.70 and 84,530.36 is: 126,617.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,486.86 : 186,467.70 = 84,530.36 : x
  2. Step 2: Convert to fraction form
    124,486.86/186,467.70 = 84,530.36/x
  3. Step 3: Cross multiply
    124,486.86x = 186,467.70 × 84,530.36
  4. Step 4: Simplify right side
    124,486.86x = 15,762,181,809.37
  5. Step 5: Solve for x
    x = 15,762,181,809.37/124,486.86
  6. Step 6: Final answer
    x = 126,617.23

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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.