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Finding the Fourth Proportional to 93,326.98, 128,811.34 and 55,072.30

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Solution

The fourth proportional to 93,326.98, 128,811.34 and 55,072.30 is: 76,011.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,326.98 : 128,811.34 = 55,072.30 : x
  2. Step 2: Convert to fraction form
    93,326.98/128,811.34 = 55,072.30/x
  3. Step 3: Cross multiply
    93,326.98x = 128,811.34 × 55,072.30
  4. Step 4: Simplify right side
    93,326.98x = 7,093,936,759.88
  5. Step 5: Solve for x
    x = 7,093,936,759.88/93,326.98
  6. Step 6: Final answer
    x = 76,011.64

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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.