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Finding the Fourth Proportional to 86,069.86, 129,133.95 and 43,967.68

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Solution

The fourth proportional to 86,069.86, 129,133.95 and 43,967.68 is: 65,966.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,069.86 : 129,133.95 = 43,967.68 : x
  2. Step 2: Convert to fraction form
    86,069.86/129,133.95 = 43,967.68/x
  3. Step 3: Cross multiply
    86,069.86x = 129,133.95 × 43,967.68
  4. Step 4: Simplify right side
    86,069.86x = 5,677,720,190.74
  5. Step 5: Solve for x
    x = 5,677,720,190.74/86,069.86
  6. Step 6: Final answer
    x = 65,966.42

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1.5x scale

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.