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Finding the Fourth Proportional to 86,210.52, 129,320.64 and 27,044.88

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Solution

The fourth proportional to 86,210.52, 129,320.64 and 27,044.88 is: 40,568.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,210.52 : 129,320.64 = 27,044.88 : x
  2. Step 2: Convert to fraction form
    86,210.52/129,320.64 = 27,044.88/x
  3. Step 3: Cross multiply
    86,210.52x = 129,320.64 × 27,044.88
  4. Step 4: Simplify right side
    86,210.52x = 3,497,461,190.32
  5. Step 5: Solve for x
    x = 3,497,461,190.32/86,210.52
  6. Step 6: Final answer
    x = 40,568.84

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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.