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Finding the Fourth Proportional to 186,245.34, 279,202.77 and 81,006.90

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Solution

The fourth proportional to 186,245.34, 279,202.77 and 81,006.90 is: 121,438.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,245.34 : 279,202.77 = 81,006.90 : x
  2. Step 2: Convert to fraction form
    186,245.34/279,202.77 = 81,006.90/x
  3. Step 3: Cross multiply
    186,245.34x = 279,202.77 × 81,006.90
  4. Step 4: Simplify right side
    186,245.34x = 22,617,350,869.11
  5. Step 5: Solve for x
    x = 22,617,350,869.11/186,245.34
  6. Step 6: Final answer
    x = 121,438.48

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1.5x scale

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.