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Finding the Fourth Proportional to 106,987.93, 147,645.57 and 58,591.87

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Solution

The fourth proportional to 106,987.93, 147,645.57 and 58,591.87 is: 80,858.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,987.93 : 147,645.57 = 58,591.87 : x
  2. Step 2: Convert to fraction form
    106,987.93/147,645.57 = 58,591.87/x
  3. Step 3: Cross multiply
    106,987.93x = 147,645.57 × 58,591.87
  4. Step 4: Simplify right side
    106,987.93x = 8,650,830,043.52
  5. Step 5: Solve for x
    x = 8,650,830,043.52/106,987.93
  6. Step 6: Final answer
    x = 80,858.00

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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.