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Finding the Fourth Proportional to 186,172.29, 256,920.39 and 101,289.42

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Solution

The fourth proportional to 186,172.29, 256,920.39 and 101,289.42 is: 139,780.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,172.29 : 256,920.39 = 101,289.42 : x
  2. Step 2: Convert to fraction form
    186,172.29/256,920.39 = 101,289.42/x
  3. Step 3: Cross multiply
    186,172.29x = 256,920.39 × 101,289.42
  4. Step 4: Simplify right side
    186,172.29x = 26,023,317,289.27
  5. Step 5: Solve for x
    x = 26,023,317,289.27/186,172.29
  6. Step 6: Final answer
    x = 139,780.83

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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.