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Finding the Fourth Proportional to 70,616.60, 105,924.83 and 18,026.10

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Solution

The fourth proportional to 70,616.60, 105,924.83 and 18,026.10 is: 27,039.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,616.60 : 105,924.83 = 18,026.10 : x
  2. Step 2: Convert to fraction form
    70,616.60/105,924.83 = 18,026.10/x
  3. Step 3: Cross multiply
    70,616.60x = 105,924.83 × 18,026.10
  4. Step 4: Simplify right side
    70,616.60x = 1,909,411,578.06
  5. Step 5: Solve for x
    x = 1,909,411,578.06/70,616.60
  6. Step 6: Final answer
    x = 27,039.13

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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.