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Finding the Fourth Proportional to 92,992.10, 128,326.41 and 52,709.58

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Solution

The fourth proportional to 92,992.10, 128,326.41 and 52,709.58 is: 72,737.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,992.10 : 128,326.41 = 52,709.58 : x
  2. Step 2: Convert to fraction form
    92,992.10/128,326.41 = 52,709.58/x
  3. Step 3: Cross multiply
    92,992.10x = 128,326.41 × 52,709.58
  4. Step 4: Simplify right side
    92,992.10x = 6,764,031,174.01
  5. Step 5: Solve for x
    x = 6,764,031,174.01/92,992.10
  6. Step 6: Final answer
    x = 72,737.70

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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.