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Finding the Fourth Proportional to 124,046.40, 186,069.60 and 117,631.20

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Solution

The fourth proportional to 124,046.40, 186,069.60 and 117,631.20 is: 176,446.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,046.40 : 186,069.60 = 117,631.20 : x
  2. Step 2: Convert to fraction form
    124,046.40/186,069.60 = 117,631.20/x
  3. Step 3: Cross multiply
    124,046.40x = 186,069.60 × 117,631.20
  4. Step 4: Simplify right side
    124,046.40x = 21,887,590,331.52
  5. Step 5: Solve for x
    x = 21,887,590,331.52/124,046.40
  6. Step 6: Final answer
    x = 176,446.80

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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.