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Finding the Fourth Proportional to 135,889.93, 187,532.79 and 75,461.58

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Solution

The fourth proportional to 135,889.93, 187,532.79 and 75,461.58 is: 104,139.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,889.93 : 187,532.79 = 75,461.58 : x
  2. Step 2: Convert to fraction form
    135,889.93/187,532.79 = 75,461.58/x
  3. Step 3: Cross multiply
    135,889.93x = 187,532.79 × 75,461.58
  4. Step 4: Simplify right side
    135,889.93x = 14,151,521,292.69
  5. Step 5: Solve for x
    x = 14,151,521,292.69/135,889.93
  6. Step 6: Final answer
    x = 104,139.59

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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.