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Finding the Fourth Proportional to 186,087.19, 279,018.42 and 83,485.79

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Solution

The fourth proportional to 186,087.19, 279,018.42 and 83,485.79 is: 125,178.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,087.19 : 279,018.42 = 83,485.79 : x
  2. Step 2: Convert to fraction form
    186,087.19/279,018.42 = 83,485.79/x
  3. Step 3: Cross multiply
    186,087.19x = 279,018.42 × 83,485.79
  4. Step 4: Simplify right side
    186,087.19x = 23,294,073,026.01
  5. Step 5: Solve for x
    x = 23,294,073,026.01/186,087.19
  6. Step 6: Final answer
    x = 125,178.27

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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.