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Finding the Fourth Proportional to 188,502.40, 260,134.17 and 103,624.93

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Solution

The fourth proportional to 188,502.40, 260,134.17 and 103,624.93 is: 143,002.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,502.40 : 260,134.17 = 103,624.93 : x
  2. Step 2: Convert to fraction form
    188,502.40/260,134.17 = 103,624.93/x
  3. Step 3: Cross multiply
    188,502.40x = 260,134.17 × 103,624.93
  4. Step 4: Simplify right side
    188,502.40x = 26,956,385,156.86
  5. Step 5: Solve for x
    x = 26,956,385,156.86/188,502.40
  6. Step 6: Final answer
    x = 143,002.88

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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.