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Finding the Fourth Proportional to 105,070.82, 144,997.76 and 67,345.06

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Solution

The fourth proportional to 105,070.82, 144,997.76 and 67,345.06 is: 92,936.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,070.82 : 144,997.76 = 67,345.06 : x
  2. Step 2: Convert to fraction form
    105,070.82/144,997.76 = 67,345.06/x
  3. Step 3: Cross multiply
    105,070.82x = 144,997.76 × 67,345.06
  4. Step 4: Simplify right side
    105,070.82x = 9,764,882,847.07
  5. Step 5: Solve for x
    x = 9,764,882,847.07/105,070.82
  6. Step 6: Final answer
    x = 92,936.20

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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.