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Finding the Fourth Proportional to 92,955.87, 128,237.85 and 55,208.25

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Solution

The fourth proportional to 92,955.87, 128,237.85 and 55,208.25 is: 76,162.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,955.87 : 128,237.85 = 55,208.25 : x
  2. Step 2: Convert to fraction form
    92,955.87/128,237.85 = 55,208.25/x
  3. Step 3: Cross multiply
    92,955.87x = 128,237.85 × 55,208.25
  4. Step 4: Simplify right side
    92,955.87x = 7,079,787,282.26
  5. Step 5: Solve for x
    x = 7,079,787,282.26/92,955.87
  6. Step 6: Final answer
    x = 76,162.89

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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.