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Finding the Fourth Proportional to 106,790, 147,367.76 and 59,043.74

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Solution

The fourth proportional to 106,790, 147,367.76 and 59,043.74 is: 81,479.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,790 : 147,367.76 = 59,043.74 : x
  2. Step 2: Convert to fraction form
    106,790/147,367.76 = 59,043.74/x
  3. Step 3: Cross multiply
    106,790x = 147,367.76 × 59,043.74
  4. Step 4: Simplify right side
    106,790x = 8,701,143,705.82
  5. Step 5: Solve for x
    x = 8,701,143,705.82/106,790
  6. Step 6: Final answer
    x = 81,479.01

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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.