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Finding the Fourth Proportional to 136,045.94, 187,314.58 and 123,434.58

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Solution

The fourth proportional to 136,045.94, 187,314.58 and 123,434.58 is: 169,950.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,045.94 : 187,314.58 = 123,434.58 : x
  2. Step 2: Convert to fraction form
    136,045.94/187,314.58 = 123,434.58/x
  3. Step 3: Cross multiply
    136,045.94x = 187,314.58 × 123,434.58
  4. Step 4: Simplify right side
    136,045.94x = 23,121,096,510.18
  5. Step 5: Solve for x
    x = 23,121,096,510.18/136,045.94
  6. Step 6: Final answer
    x = 169,950.65

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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.