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Finding the Fourth Proportional to 186,570.81, 257,504.45 and 129,949.38

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Solution

The fourth proportional to 186,570.81, 257,504.45 and 129,949.38 is: 179,355.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,570.81 : 257,504.45 = 129,949.38 : x
  2. Step 2: Convert to fraction form
    186,570.81/257,504.45 = 129,949.38/x
  3. Step 3: Cross multiply
    186,570.81x = 257,504.45 × 129,949.38
  4. Step 4: Simplify right side
    186,570.81x = 33,462,543,624.74
  5. Step 5: Solve for x
    x = 33,462,543,624.74/186,570.81
  6. Step 6: Final answer
    x = 179,355.73

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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.