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Finding the Fourth Proportional to 186,243.84, 279,200.52 and 81,005.40

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Solution

The fourth proportional to 186,243.84, 279,200.52 and 81,005.40 is: 121,436.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,243.84 : 279,200.52 = 81,005.40 : x
  2. Step 2: Convert to fraction form
    186,243.84/279,200.52 = 81,005.40/x
  3. Step 3: Cross multiply
    186,243.84x = 279,200.52 × 81,005.40
  4. Step 4: Simplify right side
    186,243.84x = 22,616,749,802.81
  5. Step 5: Solve for x
    x = 22,616,749,802.81/186,243.84
  6. Step 6: Final answer
    x = 121,436.23

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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.