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Finding the Fourth Proportional to 86,048.60, 118,745.33 and 47,807.96

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Solution

The fourth proportional to 86,048.60, 118,745.33 and 47,807.96 is: 65,974.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,048.60 : 118,745.33 = 47,807.96 : x
  2. Step 2: Convert to fraction form
    86,048.60/118,745.33 = 47,807.96/x
  3. Step 3: Cross multiply
    86,048.60x = 118,745.33 × 47,807.96
  4. Step 4: Simplify right side
    86,048.60x = 5,676,971,154.06
  5. Step 5: Solve for x
    x = 5,676,971,154.06/86,048.60
  6. Step 6: Final answer
    x = 65,974.01

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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.