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Finding the Fourth Proportional to 79,411.84, 109,583.40 and 43,601.68

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Solution

The fourth proportional to 79,411.84, 109,583.40 and 43,601.68 is: 60,167.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,411.84 : 109,583.40 = 43,601.68 : x
  2. Step 2: Convert to fraction form
    79,411.84/109,583.40 = 43,601.68/x
  3. Step 3: Cross multiply
    79,411.84x = 109,583.40 × 43,601.68
  4. Step 4: Simplify right side
    79,411.84x = 4,778,020,340.11
  5. Step 5: Solve for x
    x = 4,778,020,340.11/79,411.84
  6. Step 6: Final answer
    x = 60,167.61

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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.