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Finding the Fourth Proportional to 106,615.86, 147,131.80 and 58,868.12

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Solution

The fourth proportional to 106,615.86, 147,131.80 and 58,868.12 is: 81,239.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,615.86 : 147,131.80 = 58,868.12 : x
  2. Step 2: Convert to fraction form
    106,615.86/147,131.80 = 58,868.12/x
  3. Step 3: Cross multiply
    106,615.86x = 147,131.80 × 58,868.12
  4. Step 4: Simplify right side
    106,615.86x = 8,661,372,458.22
  5. Step 5: Solve for x
    x = 8,661,372,458.22/106,615.86
  6. Step 6: Final answer
    x = 81,239.06

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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.