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Finding the Fourth Proportional to 86,219.13, 118,914.88 and 56,014.12

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Solution

The fourth proportional to 86,219.13, 118,914.88 and 56,014.12 is: 77,255.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,219.13 : 118,914.88 = 56,014.12 : x
  2. Step 2: Convert to fraction form
    86,219.13/118,914.88 = 56,014.12/x
  3. Step 3: Cross multiply
    86,219.13x = 118,914.88 × 56,014.12
  4. Step 4: Simplify right side
    86,219.13x = 6,660,912,358.11
  5. Step 5: Solve for x
    x = 6,660,912,358.11/86,219.13
  6. Step 6: Final answer
    x = 77,255.62

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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.