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Finding the Fourth Proportional to 186,626.70, 257,543.55 and 106,047.90

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Solution

The fourth proportional to 186,626.70, 257,543.55 and 106,047.90 is: 146,345.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,626.70 : 257,543.55 = 106,047.90 : x
  2. Step 2: Convert to fraction form
    186,626.70/257,543.55 = 106,047.90/x
  3. Step 3: Cross multiply
    186,626.70x = 257,543.55 × 106,047.90
  4. Step 4: Simplify right side
    186,626.70x = 27,311,952,636.05
  5. Step 5: Solve for x
    x = 27,311,952,636.05/186,626.70
  6. Step 6: Final answer
    x = 146,345.37

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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.