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Finding the Fourth Proportional to 17,953.81, 26,928.81 and 4,807.51

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Solution

The fourth proportional to 17,953.81, 26,928.81 and 4,807.51 is: 7,210.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,953.81 : 26,928.81 = 4,807.51 : x
  2. Step 2: Convert to fraction form
    17,953.81/26,928.81 = 4,807.51/x
  3. Step 3: Cross multiply
    17,953.81x = 26,928.81 × 4,807.51
  4. Step 4: Simplify right side
    17,953.81x = 129,460,523.36
  5. Step 5: Solve for x
    x = 129,460,523.36/17,953.81
  6. Step 6: Final answer
    x = 7,210.75

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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.