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Finding the Fourth Proportional to 186,969.93, 258,141.90 and 115,455.03

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Solution

The fourth proportional to 186,969.93, 258,141.90 and 115,455.03 is: 159,404.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,969.93 : 258,141.90 = 115,455.03 : x
  2. Step 2: Convert to fraction form
    186,969.93/258,141.90 = 115,455.03/x
  3. Step 3: Cross multiply
    186,969.93x = 258,141.90 × 115,455.03
  4. Step 4: Simplify right side
    186,969.93x = 29,803,780,808.76
  5. Step 5: Solve for x
    x = 29,803,780,808.76/186,969.93
  6. Step 6: Final answer
    x = 159,404.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.