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Finding the Fourth Proportional to 188,494.40, 260,123.13 and 103,616.93

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Solution

The fourth proportional to 188,494.40, 260,123.13 and 103,616.93 is: 142,991.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,494.40 : 260,123.13 = 103,616.93 : x
  2. Step 2: Convert to fraction form
    188,494.40/260,123.13 = 103,616.93/x
  3. Step 3: Cross multiply
    188,494.40x = 260,123.13 × 103,616.93
  4. Step 4: Simplify right side
    188,494.40x = 26,953,160,152.59
  5. Step 5: Solve for x
    x = 26,953,160,152.59/188,494.40
  6. Step 6: Final answer
    x = 142,991.84

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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.