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Finding the Fourth Proportional to 104,806.70, 157,916.24 and 86,496.86

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Solution

The fourth proportional to 104,806.70, 157,916.24 and 86,496.86 is: 130,328.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,806.70 : 157,916.24 = 86,496.86 : x
  2. Step 2: Convert to fraction form
    104,806.70/157,916.24 = 86,496.86/x
  3. Step 3: Cross multiply
    104,806.70x = 157,916.24 × 86,496.86
  4. Step 4: Simplify right side
    104,806.70x = 13,659,258,903.01
  5. Step 5: Solve for x
    x = 13,659,258,903.01/104,806.70
  6. Step 6: Final answer
    x = 130,328.11

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.