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Finding the Fourth Proportional to 291,641.70, 437,462.55 and 125,429.70

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Solution

The fourth proportional to 291,641.70, 437,462.55 and 125,429.70 is: 188,144.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,641.70 : 437,462.55 = 125,429.70 : x
  2. Step 2: Convert to fraction form
    291,641.70/437,462.55 = 125,429.70/x
  3. Step 3: Cross multiply
    291,641.70x = 437,462.55 × 125,429.70
  4. Step 4: Simplify right side
    291,641.70x = 54,870,796,407.74
  5. Step 5: Solve for x
    x = 54,870,796,407.74/291,641.70
  6. Step 6: Final answer
    x = 188,144.55

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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.