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Finding the Fourth Proportional to 107,370.97, 160,845.76 and 87,401.93

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Solution

The fourth proportional to 107,370.97, 160,845.76 and 87,401.93 is: 130,931.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,370.97 : 160,845.76 = 87,401.93 : x
  2. Step 2: Convert to fraction form
    107,370.97/160,845.76 = 87,401.93/x
  3. Step 3: Cross multiply
    107,370.97x = 160,845.76 × 87,401.93
  4. Step 4: Simplify right side
    107,370.97x = 14,058,229,856.32
  5. Step 5: Solve for x
    x = 14,058,229,856.32/107,370.97
  6. Step 6: Final answer
    x = 130,931.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.