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Finding the Fourth Proportional to 86,666.22, 119,483.73 and 68,820.30

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Solution

The fourth proportional to 86,666.22, 119,483.73 and 68,820.30 is: 94,880.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,666.22 : 119,483.73 = 68,820.30 : x
  2. Step 2: Convert to fraction form
    86,666.22/119,483.73 = 68,820.30/x
  3. Step 3: Cross multiply
    86,666.22x = 119,483.73 × 68,820.30
  4. Step 4: Simplify right side
    86,666.22x = 8,222,906,143.72
  5. Step 5: Solve for x
    x = 8,222,906,143.72/86,666.22
  6. Step 6: Final answer
    x = 94,880.18

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1.5x scale

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.