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Finding the Fourth Proportional to 186,172.79, 256,921.08 and 101,289.92

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Solution

The fourth proportional to 186,172.79, 256,921.08 and 101,289.92 is: 139,781.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,172.79 : 256,921.08 = 101,289.92 : x
  2. Step 2: Convert to fraction form
    186,172.79/256,921.08 = 101,289.92/x
  3. Step 3: Cross multiply
    186,172.79x = 256,921.08 × 101,289.92
  4. Step 4: Simplify right side
    186,172.79x = 26,023,515,639.51
  5. Step 5: Solve for x
    x = 26,023,515,639.51/186,172.79
  6. Step 6: Final answer
    x = 139,781.52

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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.