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Finding the Fourth Proportional to 186,005.75, 279,008.76 and 61,346.75

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Solution

The fourth proportional to 186,005.75, 279,008.76 and 61,346.75 is: 92,020.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,005.75 : 279,008.76 = 61,346.75 : x
  2. Step 2: Convert to fraction form
    186,005.75/279,008.76 = 61,346.75/x
  3. Step 3: Cross multiply
    186,005.75x = 279,008.76 × 61,346.75
  4. Step 4: Simplify right side
    186,005.75x = 17,116,280,647.53
  5. Step 5: Solve for x
    x = 17,116,280,647.53/186,005.75
  6. Step 6: Final answer
    x = 92,020.17

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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.