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Finding the Fourth Proportional to 86,005.79, 129,004.07 and 26,834.68

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Solution

The fourth proportional to 86,005.79, 129,004.07 and 26,834.68 is: 40,250.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,005.79 : 129,004.07 = 26,834.68 : x
  2. Step 2: Convert to fraction form
    86,005.79/129,004.07 = 26,834.68/x
  3. Step 3: Cross multiply
    86,005.79x = 129,004.07 × 26,834.68
  4. Step 4: Simplify right side
    86,005.79x = 3,461,782,937.15
  5. Step 5: Solve for x
    x = 3,461,782,937.15/86,005.79
  6. Step 6: Final answer
    x = 40,250.58

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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.