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Finding the Fourth Proportional to 92,716.40, 139,042.20 and 48,328.40

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Solution

The fourth proportional to 92,716.40, 139,042.20 and 48,328.40 is: 72,475.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,716.40 : 139,042.20 = 48,328.40 : x
  2. Step 2: Convert to fraction form
    92,716.40/139,042.20 = 48,328.40/x
  3. Step 3: Cross multiply
    92,716.40x = 139,042.20 × 48,328.40
  4. Step 4: Simplify right side
    92,716.40x = 6,719,687,058.48
  5. Step 5: Solve for x
    x = 6,719,687,058.48/92,716.40
  6. Step 6: Final answer
    x = 72,475.71

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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.