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Finding the Fourth Proportional to 186,895.56, 280,340.70 and 86,999.88

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Solution

The fourth proportional to 186,895.56, 280,340.70 and 86,999.88 is: 130,498.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,895.56 : 280,340.70 = 86,999.88 : x
  2. Step 2: Convert to fraction form
    186,895.56/280,340.70 = 86,999.88/x
  3. Step 3: Cross multiply
    186,895.56x = 280,340.70 × 86,999.88
  4. Step 4: Simplify right side
    186,895.56x = 24,389,607,259.12
  5. Step 5: Solve for x
    x = 24,389,607,259.12/186,895.56
  6. Step 6: Final answer
    x = 130,498.59

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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.