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Finding the Fourth Proportional to 193,220.98, 289,581.98 and 86,526.97

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Solution

The fourth proportional to 193,220.98, 289,581.98 and 86,526.97 is: 129,678.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,220.98 : 289,581.98 = 86,526.97 : x
  2. Step 2: Convert to fraction form
    193,220.98/289,581.98 = 86,526.97/x
  3. Step 3: Cross multiply
    193,220.98x = 289,581.98 × 86,526.97
  4. Step 4: Simplify right side
    193,220.98x = 25,056,650,139.41
  5. Step 5: Solve for x
    x = 25,056,650,139.41/193,220.98
  6. Step 6: Final answer
    x = 129,678.73

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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.