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Finding the Fourth Proportional to 112,674.61, 155,490.70 and 67,350.39

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Solution

The fourth proportional to 112,674.61, 155,490.70 and 67,350.39 is: 92,943.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,674.61 : 155,490.70 = 67,350.39 : x
  2. Step 2: Convert to fraction form
    112,674.61/155,490.70 = 67,350.39/x
  3. Step 3: Cross multiply
    112,674.61x = 155,490.70 × 67,350.39
  4. Step 4: Simplify right side
    112,674.61x = 10,472,358,949.62
  5. Step 5: Solve for x
    x = 10,472,358,949.62/112,674.61
  6. Step 6: Final answer
    x = 92,943.38

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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.