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Finding the Fourth Proportional to 86,522.79, 129,783.41 and 27,358.50

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Solution

The fourth proportional to 86,522.79, 129,783.41 and 27,358.50 is: 41,037.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,522.79 : 129,783.41 = 27,358.50 : x
  2. Step 2: Convert to fraction form
    86,522.79/129,783.41 = 27,358.50/x
  3. Step 3: Cross multiply
    86,522.79x = 129,783.41 × 27,358.50
  4. Step 4: Simplify right side
    86,522.79x = 3,550,679,422.49
  5. Step 5: Solve for x
    x = 3,550,679,422.49/86,522.79
  6. Step 6: Final answer
    x = 41,037.50

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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.