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Finding the Fourth Proportional to 70,518.39, 105,777.83 and 17,927.87

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Solution

The fourth proportional to 70,518.39, 105,777.83 and 17,927.87 is: 26,891.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,518.39 : 105,777.83 = 17,927.87 : x
  2. Step 2: Convert to fraction form
    70,518.39/105,777.83 = 17,927.87/x
  3. Step 3: Cross multiply
    70,518.39x = 105,777.83 × 17,927.87
  4. Step 4: Simplify right side
    70,518.39x = 1,896,371,185.12
  5. Step 5: Solve for x
    x = 1,896,371,185.12/70,518.39
  6. Step 6: Final answer
    x = 26,891.87

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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.