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Finding the Fourth Proportional to 92,709.68, 139,069.90 and 35,783.90

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Solution

The fourth proportional to 92,709.68, 139,069.90 and 35,783.90 is: 53,677.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,709.68 : 139,069.90 = 35,783.90 : x
  2. Step 2: Convert to fraction form
    92,709.68/139,069.90 = 35,783.90/x
  3. Step 3: Cross multiply
    92,709.68x = 139,069.90 × 35,783.90
  4. Step 4: Simplify right side
    92,709.68x = 4,976,462,520.34
  5. Step 5: Solve for x
    x = 4,976,462,520.34/92,709.68
  6. Step 6: Final answer
    x = 53,677.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.