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Finding the Fourth Proportional to 124,491.20, 186,445.20 and 84,833.60

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Solution

The fourth proportional to 124,491.20, 186,445.20 and 84,833.60 is: 127,051.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,491.20 : 186,445.20 = 84,833.60 : x
  2. Step 2: Convert to fraction form
    124,491.20/186,445.20 = 84,833.60/x
  3. Step 3: Cross multiply
    124,491.20x = 186,445.20 × 84,833.60
  4. Step 4: Simplify right side
    124,491.20x = 15,816,817,518.72
  5. Step 5: Solve for x
    x = 15,816,817,518.72/124,491.20
  6. Step 6: Final answer
    x = 127,051.69

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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.