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Finding the Fourth Proportional to 186,089.78, 256,809.21 and 101,212.31

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Solution

The fourth proportional to 186,089.78, 256,809.21 and 101,212.31 is: 139,675.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,089.78 : 256,809.21 = 101,212.31 : x
  2. Step 2: Convert to fraction form
    186,089.78/256,809.21 = 101,212.31/x
  3. Step 3: Cross multiply
    186,089.78x = 256,809.21 × 101,212.31
  4. Step 4: Simplify right side
    186,089.78x = 25,992,253,373.38
  5. Step 5: Solve for x
    x = 25,992,253,373.38/186,089.78
  6. Step 6: Final answer
    x = 139,675.88

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1.5x scale

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.