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Finding the Fourth Proportional to 93,243.68, 128,692.92 and 55,000.88

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Solution

The fourth proportional to 93,243.68, 128,692.92 and 55,000.88 is: 75,911.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,243.68 : 128,692.92 = 55,000.88 : x
  2. Step 2: Convert to fraction form
    93,243.68/128,692.92 = 55,000.88/x
  3. Step 3: Cross multiply
    93,243.68x = 128,692.92 × 55,000.88
  4. Step 4: Simplify right side
    93,243.68x = 7,078,223,849.77
  5. Step 5: Solve for x
    x = 7,078,223,849.77/93,243.68
  6. Step 6: Final answer
    x = 75,911.03

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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.