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Finding the Fourth Proportional to 92,903.45, 128,184.75 and 54,664.65

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Solution

The fourth proportional to 92,903.45, 128,184.75 and 54,664.65 is: 75,424.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,903.45 : 128,184.75 = 54,664.65 : x
  2. Step 2: Convert to fraction form
    92,903.45/128,184.75 = 54,664.65/x
  3. Step 3: Cross multiply
    92,903.45x = 128,184.75 × 54,664.65
  4. Step 4: Simplify right side
    92,903.45x = 7,007,174,494.09
  5. Step 5: Solve for x
    x = 7,007,174,494.09/92,903.45
  6. Step 6: Final answer
    x = 75,424.27

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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.