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Finding the Fourth Proportional to 86,768.62, 130,106.21 and 46,809.05

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Solution

The fourth proportional to 86,768.62, 130,106.21 and 46,809.05 is: 70,188.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,768.62 : 130,106.21 = 46,809.05 : x
  2. Step 2: Convert to fraction form
    86,768.62/130,106.21 = 46,809.05/x
  3. Step 3: Cross multiply
    86,768.62x = 130,106.21 × 46,809.05
  4. Step 4: Simplify right side
    86,768.62x = 6,090,147,204.62
  5. Step 5: Solve for x
    x = 6,090,147,204.62/86,768.62
  6. Step 6: Final answer
    x = 70,188.36

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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.