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Finding the Fourth Proportional to 92,993.16, 128,285.46 and 55,240.68

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Solution

The fourth proportional to 92,993.16, 128,285.46 and 55,240.68 is: 76,205.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,993.16 : 128,285.46 = 55,240.68 : x
  2. Step 2: Convert to fraction form
    92,993.16/128,285.46 = 55,240.68/x
  3. Step 3: Cross multiply
    92,993.16x = 128,285.46 × 55,240.68
  4. Step 4: Simplify right side
    92,993.16x = 7,086,576,044.51
  5. Step 5: Solve for x
    x = 7,086,576,044.51/92,993.16
  6. Step 6: Final answer
    x = 76,205.35

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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.