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Finding the Fourth Proportional to 140,364.65, 210,688.90 and 124,456.05

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Solution

The fourth proportional to 140,364.65, 210,688.90 and 124,456.05 is: 186,809.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,364.65 : 210,688.90 = 124,456.05 : x
  2. Step 2: Convert to fraction form
    140,364.65/210,688.90 = 124,456.05/x
  3. Step 3: Cross multiply
    140,364.65x = 210,688.90 × 124,456.05
  4. Step 4: Simplify right side
    140,364.65x = 26,221,508,272.85
  5. Step 5: Solve for x
    x = 26,221,508,272.85/140,364.65
  6. Step 6: Final answer
    x = 186,809.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.