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Finding the Fourth Proportional to 106,615.32, 147,129.36 and 58,868.76

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Solution

The fourth proportional to 106,615.32, 147,129.36 and 58,868.76 is: 81,239.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,615.32 : 147,129.36 = 58,868.76 : x
  2. Step 2: Convert to fraction form
    106,615.32/147,129.36 = 58,868.76/x
  3. Step 3: Cross multiply
    106,615.32x = 147,129.36 × 58,868.76
  4. Step 4: Simplify right side
    106,615.32x = 8,661,322,982.79
  5. Step 5: Solve for x
    x = 8,661,322,982.79/106,615.32
  6. Step 6: Final answer
    x = 81,239.01

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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.