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Finding the Fourth Proportional to 86,960.80, 130,455.60 and 37,064.80

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Solution

The fourth proportional to 86,960.80, 130,455.60 and 37,064.80 is: 55,603.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,960.80 : 130,455.60 = 37,064.80 : x
  2. Step 2: Convert to fraction form
    86,960.80/130,455.60 = 37,064.80/x
  3. Step 3: Cross multiply
    86,960.80x = 130,455.60 × 37,064.80
  4. Step 4: Simplify right side
    86,960.80x = 4,835,310,722.88
  5. Step 5: Solve for x
    x = 4,835,310,722.88/86,960.80
  6. Step 6: Final answer
    x = 55,603.34

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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.