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Finding the Fourth Proportional to 107,863.92, 148,751.64 and 70,124.40

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Solution

The fourth proportional to 107,863.92, 148,751.64 and 70,124.40 is: 96,706.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,863.92 : 148,751.64 = 70,124.40 : x
  2. Step 2: Convert to fraction form
    107,863.92/148,751.64 = 70,124.40/x
  3. Step 3: Cross multiply
    107,863.92x = 148,751.64 × 70,124.40
  4. Step 4: Simplify right side
    107,863.92x = 10,431,119,504.02
  5. Step 5: Solve for x
    x = 10,431,119,504.02/107,863.92
  6. Step 6: Final answer
    x = 96,706.29

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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.