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Finding the Fourth Proportional to 92,745.57, 139,047.08 and 47,115.76

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Solution

The fourth proportional to 92,745.57, 139,047.08 and 47,115.76 is: 70,637.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,745.57 : 139,047.08 = 47,115.76 : x
  2. Step 2: Convert to fraction form
    92,745.57/139,047.08 = 47,115.76/x
  3. Step 3: Cross multiply
    92,745.57x = 139,047.08 × 47,115.76
  4. Step 4: Simplify right side
    92,745.57x = 6,551,308,849.98
  5. Step 5: Solve for x
    x = 6,551,308,849.98/92,745.57
  6. Step 6: Final answer
    x = 70,637.43

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1.5x scale

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.